Manage Add-ons Error

I have a 4.3.5 Linux Confluence Standalone Server. When I click on the Manage Add-ons section of Confluence-Admin I get the following message and error:

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An unexpected error occurred. Please refer to the logs for more information.

How can I enable plugins? I don't have a firewall enabled on my linux server.

2 answers

This error is displayed also in Confluence 7.1. It helped us to replace the JAR file of the old version 2.18.4 of the system add-on Universal Plugin Manager instead of the current version. Then all was OK.

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