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Uninstall all Power Apps. In particular, uninstall:
Power Scripts
SIL Engine
Power Apps Licensing Manager (formerly Warden)
Stop Jira
Clear the plugin cache. Delete <JIRA_HOME>/plugins/.bundled-plugins and <JIRA_HOME>/plugins/.osgi-plugins (just these two folders)
Manually remove any Power Apps with version 6.0.820.x found in <JIRA_HOME>/plugins directory. In particular, look for the following names:
power-scripts
katl-commons (SIL Engine)
warden (Power Apps License Manager)
Restart JIRA.
Download Power Apps from the Atlassian Marketplace.
https://marketplace.atlassian.com/apps/43318/power-scripts-jira-workflow-automation/version-history
https://marketplace.atlassian.com/apps/373929/sil-engine-for-power-suite/version-historyInstall Power Apps manually in the following order:
SIL Engine (Power Apps Licensing Manager installs automatically).
Power Scripts
All other Power Apps
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