Fix error "Something went wrong while trying to serve your request" that occurs when viewing pull requests in Bitbucket Data Center
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
This article covers how to resolve the pop-up error message that appears in Bitbucket Data Center while viewing pull requests: "Something went wrong while trying to serve your request."
Environment
All versions of Bitbucket Data Center.
Diagnosis
The atlassian-bitbucket.log file will show a message similar to this:
2025-04-10 07:49:36,066 ERROR [http-nio-8080-exec-6] USER *9IH2BBx469x89775x7 12b7ny 127.0.0.1 "GET /rest/ui/latest/projects/PROJ/repos/repo/pull-requests/123/merge HTTP/1.1" c.a.p.r.v.e.ThrowableExceptionMapper Uncaught exception c0c23f89-a364-480e-8ffb-1bfde2e544b4 thrown by REST service: com/atlassian/utils/process/ProcessException
java.lang.NoClassDefFoundError: com/atlassian/utils/process/ProcessException
at com.pbaranchikov.stash.checks.EolCheckHook.lambda$new$0(EolCheckHook.java:48)
at com.pbaranchikov.stash.checks.EolCheckHook.checkForWrongEol(EolCheckHook.java:65)
at com.pbaranchikov.stash.checks.MergeCheck.checkForWrongEol(MergeCheck.java:73)
at com.pbaranchikov.stash.checks.MergeCheck.preUpdate(MergeCheck.java:44)
at com.pbaranchikov.stash.checks.MergeCheck.preUpdate(MergeCheck.java:23)
at com.atlassian.stash.internal.hook.repository.DefaultRepositoryHookService.preUpdate(DefaultRepositoryHookService.java:844)
[...]
Caused by: java.lang.ClassNotFoundException: com.atlassian.utils.process.ProcessException not found by com.pbaranchikov.stash-eol-check [129]
at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1591)
... 100 common frames omittedCause
This is caused by the stash-eol-check app, which is incompatible with your version of Bitbucket Data Center.
Solution
Check with the vendor of the app to see if a newer version is available, or turn off or uninstall the app from Bitbucket Data Center.
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