System Error for Users and Security, java.lang.NullPointerException

[Seraina]

Hello everyone, 

When I want to do administration on the user profiles for Jira and Confluence I got the following error: 

A system error has occurred — our apologies!

Cause: 

java.lang.NullPointerException
    at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:187)

Stack Trace:[hide]

java.lang.NullPointerException

(....) 

Has someone an idea why this happens ? 

I read about that indexing might be the problem, but when I check the index, it shows 100%, for me it means that everything is fine with indexing. 

Any other solutions ?

Thank you

Best regards
Seraina

[Nic Brough -Adaptavist-]

I'm afraid there is not enough of the error here to be able to debug it

What user directory are you using, and what is the full chunk of error?

[Seraina]

Cause

java.lang.NullPointerException
    at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:187)

java.lang.NullPointerException
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:187)
at com.google.common.collect.ImmutableList$Builder.add(ImmutableList.java:583)
at com.google.common.collect.ImmutableList$Builder.add(ImmutableList.java:566)
at com.google.common.collect.ImmutableCollection$Builder.addAll(ImmutableCollection.java:324)
at com.google.common.collect.ImmutableList$Builder.addAll(ImmutableList.java:600)
at com.atlassian.confluence.api.model.pagination.PageResponseImpl$Builder.addAll(PageResponseImpl.java:162)
at com.atlassian.confluence.api.model.pagination.PageResponseImpl.from(PageResponseImpl.java:82)
at com.atlassian.confluence.api.impl.pagination.PaginationServiceImpl.lambda$doRequestInTransaction$0(PaginationServiceImpl.java:133)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:128)
at com.atlassian.confluence.api.impl.pagination.PaginationServiceImpl.doRequestInTransaction(PaginationServiceImpl.java:128)
at com.atlassian.confluence.api.impl.pagination.PaginationServiceImpl.doPaginationRequest(PaginationServiceImpl.java:57)
at com.atlassian.confluence.internal.user.UserSearchServiceInternalImpl.doUserSearch(UserSearchServiceInternalImpl.java:70)
at com.atlassian.confluence.user.actions.AbstractSearchCrowdUsersAction.doUserSearch(AbstractSearchCrowdUsersAction.java:98)
at com.atlassian.confluence.user.actions.BrowseUsersAction.execute(BrowseUsersAction.java:9)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:168)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.validation.MessageHolderInterceptor.intercept(MessageHolderInterceptor.java:37)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.util.LoggingContextInterceptor.intercept(LoggingContextInterceptor.java:44)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.core.CancellingInterceptor.intercept(CancellingInterceptor.java:21)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.xwork.HttpMethodValidationInterceptor.intercept(HttpMethodValidationInterceptor.java:68)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.security.websudo.WebSudoInterceptor.intercept(WebSudoInterceptor.java:64)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.themes.ThemeContextInterceptor.intercept(ThemeContextInterceptor.java:63)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.security.actions.PermissionCheckInterceptor.intercept(PermissionCheckInterceptor.java:55)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.setup.webwork.BootstrapAwareInterceptor.intercept(BootstrapAwareInterceptor.java:21)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:35)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.user.actions.UserAwareInterceptor.intercept(UserAwareInterceptor.java:53)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.pages.actions.CommentAwareInterceptor.intercept(CommentAwareInterceptor.java:44)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.pages.actions.PageAwareInterceptor.intercept(PageAwareInterceptor.java:66)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)
at com.atlassian.confluence.spaces.actions.SpaceAwareInterceptor.intercept(SpaceAwareInterceptor.java:71)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:165)

[Seraina]

I am using Remote JIRA Directory with Type Atlassian Crowd. 

[Nic Brough -Adaptavist-]

Ah, ok.  This is something that can happen when something changes in Crowd and Confluence falls over (I'm not an expert on the internals, I can't start on what the root problem might be)

Try:

Clearing the caches (Admin -> caches -> flush all)

Re-indexing (100% indexed does not mean it's healthy, just that there is no indexing in progress.  Admin -> Indexing, re-index all, recommended when users are not highly active, as their searches and reporting might fail)

You might also want to remove and re-connect the user directory, but I'd try that last, and after a full backup of both systems.

[Seraina]

@Nic Brough -Adaptavist-hank you. I have found out, that the user directories were not working properly.

This means (for user facing the same problem in the future): 

Enable external directory by enabling external user management on Jira.

Follow this step by step: 

https://confluence.atlassian.com/display/CONF210/Delegate+user+management+to+use+JIRA+logins?_ga=2.218683673.1897144652.1554102947-1950230685.1542965051#DelegateusermanagementtouseJIRAlogins-StepEight:ActivatingExternalUserManagement

Thank you.