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https://issues.apache.org/jira/browse/MYFACES-4306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16952612#comment-16952612
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Thomas Andraschko commented on MYFACES-4306:
--------------------------------------------

Would it be possible to provide a sample maven application with 
jetty-maven-plugin+weld+myfaces?
Otherwise it's very hard to replicate for me and won't have time to install and 
configure jboss/wildfly.

> Intermittent "Argument bean must not be null"
> ---------------------------------------------
>
>                 Key: MYFACES-4306
>                 URL: https://issues.apache.org/jira/browse/MYFACES-4306
>             Project: MyFaces Core
>          Issue Type: Bug
>          Components: General
>    Affects Versions: 2.3.4
>         Environment: Wildfly 19
>            Reporter: Teresa Miyar
>            Priority: Major
>         Attachments: bundled-jsf.ear
>
>
> Intermittently getting the following stack trace:
> {code:java}
> Caused by: org.jboss.weld.exceptions.IllegalArgumentException: WELD-001456: 
> Argument bean must not be nullCaused by: 
> org.jboss.weld.exceptions.IllegalArgumentException: WELD-001456: Argument 
> bean must not be null at 
> org.jboss.weld.util.Preconditions.checkArgumentNotNull(Preconditions.java:40) 
> at 
> org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:708) 
> at 
> org.jboss.weld.util.ForwardingBeanManager.getReference(ForwardingBeanManager.java:64)
>  at 
> org.jboss.weld.bean.builtin.BeanManagerProxy.getReference(BeanManagerProxy.java:87)
>  at org.apache.myfaces.cdi.util.CDIUtils.resolveInstance(CDIUtils.java:65) at 
> org.apache.myfaces.cdi.util.CDIUtils.lookup(CDIUtils.java:52) at 
> org.apache.myfaces.el.unified.ResolverBuilderBase.isReplaceImplicitObjectResolverWithCDIResolver(ResolverBuilderBase.java:232)
>  at 
> org.apache.myfaces.el.unified.ResolverBuilderForFaces.build(ResolverBuilderForFaces.java:108)
>  at 
> org.apache.myfaces.application.ApplicationImpl.createFacesResolver(ApplicationImpl.java:408)
>  at 
> org.apache.myfaces.application.ApplicationImpl.getELResolver(ApplicationImpl.java:389)
>  at 
> org.apache.myfaces.context.servlet.FacesContextImplBase.getELContext(FacesContextImplBase.java:230)
> {code}
> It works fine with MyFaces 2.0, the reason could be the one explained here 
> [https://issues.jboss.org/browse/WELD-1387]
>  
> to reproduce install wildfly 19, start/stop several times sometimes starts 
> with error and sometimes starts without a problem.



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