Jira unable to start after an upgrade due to java.lang.IncompatibleClassChangeError
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
Symptoms
The following appears in the atlassian-jira.log:
1
java.lang.RuntimeException: org.apache.jasper.JasperException: javax.servlet.ServletException: java.lang.IncompatibleClassChangeError: Found interface com.atlassian.jira.plugin.navigation.TopNavigationModuleDescriptor, but class was expectedCause
There are incompatible plugins in Jira which is causing the application failed to start after the upgrade.
Resolution
Stop Jira
Backup <jira-home-directory>/plugins/installed-plugins/
Remove <jira-home-directory>/plugins/installed-plugins/
Start Jira
This will allow JIRAJirato successfully startup again. Next, install only the compatible plugin into Jira. You may check the plugins compatibility matrix and download them from here:
https://marketplace.atlassian.com/
.
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