Clicking the 'All' or 'Transitions' Issue Tab Panel Results in 'An Unknown Error Occurred - Actions == Null' Error
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
This problem is related to a third party plugin, and therefore not supported by Atlassian. See Atlassian Supported Plugins for more information.
Symptoms
The following error message appears in the JIRA UI when clicking on 'All' or 'Transitions' issue tab panel:
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An unknown error occurred - actions == null. Please see logs for more details.
When reviewing the logs, the following error can be found in the logs:
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Caused by: java.lang.NoClassDefFoundError: edu/emory/mathcs/backport/java/util/Collections
at com.googlecode.jsu.transitionssummary.issuetabpanel.TransitionsSummaryTabPanel.getActions(TransitionsSummaryTabPanel.java:48)
at com.atlassian.jira.issue.tabpanels.AllTabPanel.getActions(AllTabPanel.java:44)
...Cause
This problem is caused by the third-party plugin called Jira Suite Utilities. The error occurs because the Jira instance is running with an old version of the plugin that is not compatible with the version below Jira that is being used.
Resolution
Remove the old plugin version of the plugin and replace it with a version that is compatible with your version of JIRA. For compatibility charts and installation directions, refer to the Jira Suite Utilities page.
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