Hi,

I have finally get oai "almost" running.
I have applied the patch https://github.com/DSpace/DSpace/pull/953/ and
solve some dependencies problem.
Now I get the following error. Any ideas?

Thanks in advance

java.io.IOException:
com.lyncode.xoai.dataprovider.exceptions.WritingXmlException: Error
trying to output ''
        at 
org.dspace.xoai.services.impl.cache.DSpaceXOAICacheService.store(DSpaceXOAICacheService.java:113)
        at 
org.dspace.xoai.controller.DSpaceOAIDataProvider.contextAction(DSpaceOAIDataProvider.java:104)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at 
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
        at 
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
        at 
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
        at 
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
        at 
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
        at 
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
        at 
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
        at 
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
        at 
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
        at 
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:844)
        at 
weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:280)
        at 
weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:254)
        at 
weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:136)
        at 
weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:341)
        at 
weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:238)
        at 
weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3363)
        at 
weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3333)
        at 
weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
        at 
weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
        at 
weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:57)
        at 
weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2220)
        at 
weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2146)
        at 
weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2124)
        at 
weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1564)
        at 
weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:254)
        at weblogic.work.ExecuteThread.execute(ExecuteThread.java:295)
        at weblogic.work.ExecuteThread.run(ExecuteThread.java:254)
Caused by: com.lyncode.xoai.dataprovider.exceptions.WritingXmlException:
Error trying to output ''
        at 
com.lyncode.xoai.dataprovider.xml.EchoElement.write(EchoElement.java:58)
        at 
com.lyncode.xoai.dataprovider.xml.oaipmh.MetadataType.write(MetadataType.java:78)
        at 
com.lyncode.xoai.dataprovider.xml.oaipmh.RecordType.write(RecordType.java:130)
        at 
com.lyncode.xoai.dataprovider.xml.oaipmh.ListRecordsType.write(ListRecordsType.java:110)
        at com.lyncode.xoai.util.XmlIOUtils.writeElement(XmlIOUtils.java:20)
        at 
com.lyncode.xoai.dataprovider.xml.oaipmh.OAIPMHtype.write(OAIPMHtype.java:286)
        at com.lyncode.xoai.dataprovider.xml.oaipmh.OAIPMH.write(OAIPMH.java:44)
        at 
org.dspace.xoai.services.impl.cache.DSpaceXOAICacheService.store(DSpaceXOAICacheService.java:97)
        ... 34 more
Caused by: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog
 at [row,col {unknown-source}]: [1,0]
        at 
com.ctc.wstx.sr.StreamScanner.throwUnexpectedEOF(StreamScanner.java:677)
        at 
com.ctc.wstx.sr.BasicStreamReader.handleEOF(BasicStreamReader.java:2119)
        at 
com.ctc.wstx.sr.BasicStreamReader.nextFromProlog(BasicStreamReader.java:2025)
        at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1117)
        at 
org.codehaus.stax2.ri.Stax2EventReaderImpl.nextEvent(Stax2EventReaderImpl.java:255)
        at 
com.lyncode.xoai.dataprovider.xml.EchoElement.write(EchoElement.java:31)
        ... 41 more
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