Start with a look at the application log file. You should find it in the JIRA home directory under /logs, probably called atlassian-jira.log
The part you are interested in is the point at which you click "enable" - that should dump lots of information (including "I can't start this plugin because...." info) into that log.
Hello! My name is Genevieve Blanch, and I'm the Marketing Manager at RefinedWiki, creators of apps to give teams the tools to customize Atlassian platforms. Currently, 44% of the tech team at Re...
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