Hi there
We seem to be experiencing a similar bug 
to https://github.com/DSpace/DSpace/issues/8732 which was fixed by 
https://github.com/DSpace/DSpace/pull/8752 again in 9.1.  
with identifiers.submission.register = true.  The Register DOI button in 
showing in item status page and brings up the metadata check page but 
clicking the confirm button on the check page does not work first time it 
is pressed (no DOI is created/saved).  Second time it is pressed 2 error 
modals pop up on screen but a DOI is actually created for the item.  The 
items we were trying to mint DOIs for are not included in our item-filter 
for auto-minting of dois (hence why we have to use this option).
The error stack trace from dspace log is a bit different to the example 
in 8752 (full error stack attached) e.g. first few lines:
2026-02-26 17:46:57,695 ERROR ec44c601-409f-408d-a55b-71e8e4527381 
8c020bb6-4914-485a-9429-58028d993a0b org.dspace.event.BasicDispatcher @ 
Consumer("doi").consume threw: 
org.dspace.identifier.doi.DOIIdentifierNotApplicableException: Item 
10092/109409 was evaluated as 'false' by the item filter, not minting
org.dspace.identifier.doi.DOIIdentifierNotApplicableException: Item 
10092/109409 was evaluated as 'false' by the item filter, not minting
        at 
org.dspace.identifier.DOIIdentifierProvider.checkMintable(DOIIdentifierProvider.java:1141)
 
~[dspace-api-9.1.jar:9.1]
        at 
org.dspace.identifier.DOIIdentifierProvider.loadOrCreateDOI(DOIIdentifierProvider.java:1007)
 
~[dspace-api-9.1.jar:9.1]
        at 
org.dspace.identifier.DOIIdentifierProvider.mint(DOIIdentifierProvider.java:622)
 
~[dspace-api-9.1.jar:9.1]

I've been checking our identifier configurations against what we had when 
this was working in 7.6 which we upgraded from. Thus far it all looks 
correct (not identical to 7.6 as we had workarounds for bugs subsequently 
fixed).  

There are also errors related to versions.  We have item versioning 
disabled and just using DOIIdentifierProvider rather than the versioned 
option in identifiers-service.xml.  In 7.6 there were bugs with this and we 
had to comment out versioning.enabled = false in local.cfg as well as use 
the class (org.dspace.identifier.VersionedDOIIdentifierProvider) in 
the DOIIdentifierProvider bean.  I had thought all bugs related to this 
were fixed now so reverted our 9.1 configuration for the bean back to the 
example.  Looking closer at PR 8752 the fix for it only adjusted the code 
for 
dspace-api/src/main/java/org/dspace/identifier/VersionedDOIIdentifierProvider.java.
  
Now we are using the DOIIdentifierProvider class in identifier-service.xml 
again so I guess that could explain why we now have the issue occurring?  
Curious if anyone else not using versioning and with 
identifiers.submission.register = true is also experiencing this.  Not sure 
if it is still wise to change the class back to  
VersionedDOIIdentifierProvider to get around this issue given the amount of 
code change in dspace between 7.6 and 9.1.

Kind Regards,
Romy

Romy Forrer
Library Systems Coordinator
University of Canterbury

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2026-02-26 17:46:57,695 ERROR ec44c601-409f-408d-a55b-71e8e4527381 
8c020bb6-4914-485a-9429-58028d993a0b org.dspace.event.BasicDispatcher @ 
Consumer("doi").consume threw: 
org.dspace.identifier.doi.DOIIdentifierNotApplicableException: Item 
10092/109409 was evaluated as 'false' by the item filter, not minting
org.dspace.identifier.doi.DOIIdentifierNotApplicableException: Item 
10092/109409 was evaluated as 'false' by the item filter, not minting
        at 
org.dspace.identifier.DOIIdentifierProvider.checkMintable(DOIIdentifierProvider.java:1141)
 ~[dspace-api-9.1.jar:9.1]
        at 
org.dspace.identifier.DOIIdentifierProvider.loadOrCreateDOI(DOIIdentifierProvider.java:1007)
 ~[dspace-api-9.1.jar:9.1]
        at 
org.dspace.identifier.DOIIdentifierProvider.mint(DOIIdentifierProvider.java:622)
 ~[dspace-api-9.1.jar:9.1]
        at org.dspace.identifier.doi.DOIConsumer.consume(DOIConsumer.java:105) 
~[dspace-api-9.1.jar:9.1]
        at org.dspace.event.BasicDispatcher.dispatch(BasicDispatcher.java:104) 
~[dspace-api-9.1.jar:9.1]
        at org.dspace.core.Context.dispatchEvents(Context.java:471) 
~[dspace-api-9.1.jar:9.1]
        at org.dspace.core.Context.commit(Context.java:440) 
~[dspace-api-9.1.jar:9.1]
        at 
org.dspace.app.rest.repository.DSpaceRestRepository.patch(DSpaceRestRepository.java:441)
 ~[dspace-server-webapp-9.1.jar:9.1]
        at 
java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
 ~[?:?]
        at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?]
        at 
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:359)
 ~[spring-aop-6.2.8.jar:6.2.8]
        at 
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:724)
 ~[spring-aop-6.2.8.jar:6.2.8]
        at 
org.dspace.app.rest.repository.WorkflowItemRestRepository$$SpringCGLIB$$0.patch(<generated>)
 ~[dspace-server-webapp-9.1.jar:9.1]
        at 
org.dspace.app.rest.RestResourceController.patchInternal(RestResourceController.java:764)
 ~[dspace-server-webapp-9.1.jar:9.1]
        at 
org.dspace.app.rest.RestResourceController.patch(RestResourceController.java:696)
 ~[dspace-server-webapp-9.1.jar:9.1]
        at 
java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
 ~[?:?]
        at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?]
        at 
org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:258)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:191)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:118)
 ~[spring-webmvc-6.2.8.jar:6.2.8]
        at 
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:986)
 ~[spring-webmvc-6.2.8.jar:6.2.8]
        at 
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:891)
 ~[spring-webmvc-6.2.8.jar:6.2.8]
        at 
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
 ~[spring-webmvc-6.2.8.jar:6.2.8]
        at 
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1089)
 ~[spring-webmvc-6.2.8.jar:6.2.8]
        at 
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979)
 ~[spring-webmvc-6.2.8.jar:6.2.8]
        at 
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014)
 ~[spring-webmvc-6.2.8.jar:6.2.8]
        at 
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:888)
 ~[spring-webmvc-6.2.8.jar:6.2.8]
        at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) 
~[servlet-api.jar:6.0]
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138)
 ~[catalina.jar:10.1.49]
        at 
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) 
~[tomcat-websocket.jar:10.1.49]
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138)
 ~[catalina.jar:10.1.49]
        at 
org.springframework.web.filter.AbstractRequestLoggingFilter.doFilterInternal(AbstractRequestLoggingFilter.java:289)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138)
 ~[catalina.jar:10.1.49]
        at 
org.dspace.app.rest.filter.DSpaceRequestContextFilter.doFilter(DSpaceRequestContextFilter.java:41)
 ~[dspace-server-webapp-9.1.jar:9.1]
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138)
 ~[catalina.jar:10.1.49]
        at 
org.dspace.app.rest.filter.ContentLanguageHeaderResponseFilter.doFilter(ContentLanguageHeaderResponseFilter.java:51)
 ~[dspace-server-webapp-9.1.jar:9.1]
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138)
 ~[catalina.jar:10.1.49]
        at 
org.dspace.utils.servlet.DSpaceWebappServletFilter.doFilter(DSpaceWebappServletFilter.java:87)
 ~[dspace-services-9.1.jar:9.1]
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138)
 ~[catalina.jar:10.1.49]
        at 
org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:108)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:108)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.security.web.FilterChainProxy.lambda$doFilterInternal$3(FilterChainProxy.java:231)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$FilterObservation$SimpleFilterObservation.lambda$wrap$1(ObservationFilterChainDecorator.java:479)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$AroundFilterObservation$SimpleAroundFilterObservation.lambda$wrap$1(ObservationFilterChainDecorator.java:340)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator.lambda$wrapSecured$0(ObservationFilterChainDecorator.java:82)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:128)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.access.intercept.AuthorizationFilter.doFilter(AuthorizationFilter.java:101)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:125)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:131)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:85)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:179)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.dspace.app.rest.security.AnonymousAdditionalAuthorizationFilter.doFilterInternal(AnonymousAdditionalAuthorizationFilter.java:67)
 ~[dspace-server-webapp-9.1.jar:9.1]
        at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:107)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:93)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:235)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:229)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:235)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:229)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:235)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:229)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:235)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:229)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:235)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:229)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.dspace.app.rest.security.StatelessAuthenticationFilter.doFilterInternal(StatelessAuthenticationFilter.java:105)
 ~[dspace-server-webapp-9.1.jar:9.1]
        at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:134)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:91) 
~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:90)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:75)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.context.SecurityContextHolderFilter.doFilter(SecurityContextHolderFilter.java:82)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.context.SecurityContextHolderFilter.doFilter(SecurityContextHolderFilter.java:69)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:62)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:227)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.session.DisableEncodeUrlFilter.doFilterInternal(DisableEncodeUrlFilter.java:42)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.wrapFilter(ObservationFilterChainDecorator.java:240)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$AroundFilterObservation$SimpleAroundFilterObservation.lambda$wrap$0(ObservationFilterChainDecorator.java:323)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$ObservationFilter.doFilter(ObservationFilterChainDecorator.java:224)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.ObservationFilterChainDecorator$VirtualFilterChain.doFilter(ObservationFilterChainDecorator.java:137)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:233)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:191)
 ~[spring-security-web-6.5.1.jar:6.5.1]
        at 
org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:113)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.filter.ServletRequestPathFilter.doFilter(ServletRequestPathFilter.java:52)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:113)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:74)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration$CompositeFilterChainProxy.doFilter(WebSecurityConfiguration.java:319)
 ~[spring-security-config-6.5.1.jar:6.5.1]
        at 
org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:113)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.servlet.handler.HandlerMappingIntrospector.lambda$createCacheFilter$4(HandlerMappingIntrospector.java:267)
 ~[spring-webmvc-6.2.8.jar:6.2.8]
        at 
org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:113)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:74)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.security.config.annotation.web.configuration.WebMvcSecurityConfiguration$CompositeFilterChainProxy.doFilter(WebMvcSecurityConfiguration.java:240)
 ~[spring-security-config-6.5.1.jar:6.5.1]
        at 
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:362)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:278)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138)
 ~[catalina.jar:10.1.49]
        at 
org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138)
 ~[catalina.jar:10.1.49]
        at 
org.springframework.web.filter.ServerHttpObservationFilter.doFilterInternal(ServerHttpObservationFilter.java:114)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138)
 ~[catalina.jar:10.1.49]
        at 
org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:124)
 ~[spring-boot-3.5.3.jar:3.5.3]
        at 
org.springframework.boot.web.servlet.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:99)
 ~[spring-boot-3.5.3.jar:3.5.3]
        at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:117)
 ~[spring-boot-3.5.3.jar:3.5.3]
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138)
 ~[catalina.jar:10.1.49]
        at 
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138)
 ~[catalina.jar:10.1.49]
        at 
org.springframework.web.filter.ForwardedHeaderFilter.doFilterInternal(ForwardedHeaderFilter.java:173)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
 ~[spring-web-6.2.8.jar:6.2.8]
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:162)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:138)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:165)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:88)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:113) 
~[catalina.jar:10.1.49]
        at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:83) 
~[catalina.jar:10.1.49]
        at 
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:654)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:72)
 ~[catalina.jar:10.1.49]
        at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) 
~[catalina.jar:10.1.49]
        at 
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) 
~[tomcat-coyote.jar:10.1.49]
        at 
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
 ~[tomcat-coyote.jar:10.1.49]
        at 
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:903)
 ~[tomcat-coyote.jar:10.1.49]
        at 
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1774)
 ~[tomcat-coyote.jar:10.1.49]
        at 
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) 
~[tomcat-coyote.jar:10.1.49]
        at 
org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:973)
 ~[tomcat-util.jar:10.1.49]
        at 
org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:491)
 ~[tomcat-util.jar:10.1.49]
        at 
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)
 ~[tomcat-util.jar:10.1.49]
        at java.base/java.lang.Thread.run(Thread.java:1583) [?:?]
2026-02-26 17:46:57,702 WARN  unknown 2be449de-6a4a-41e9-a02a-39b61b6daf81 
org.dspace.app.rest.utils.Utils @ Tried fetching resource: version for 
DSpaceObject with ID: a6c90ae6-4f32-415f-b418-9038f3722818

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