tried to upload a plugin (new version of "Share page") and see a progress bar that is stuck @ about 85%.
Page refresh brings the progress bar back to about 50% -> goes to 85% and is stuck again. No errors in the logs. Will plan to restart the system after EOB, but am curious - has anyone experienced anything like that?
it seems that I can trace the problem back to installed "groovy-188.8.131.52" runtime. https://marketplace.atlassian.com/plugins/org.codehaus.groovy.groovy-all-atlassianplugin
I have been disabling plugins one by one until I could reproduce the "hanging" of the UPM.
Groovy is an OSGi bundle, so it may affect UPM in some way
Assuming that you're using MySQL, you might be facing this problem, related exclusive with MySQL, that is max_allowed_packet that is set too low for Confluence.
You might want to check our documentation to fix it:
both manual uploads and through UPM had issues - so I removed all plugins and restarted Confluence + installed plugins 1-by-1 => I see errors relating to Adaptavist PLM plugin (their licensing manager) - disabled that. Plugins update fine now.
Weird.. never had issues with Adaptavist products before :(
I had the same problem today with a Confluence 5.8.15 trying to install a SAML plugin.
Moreover, this was blocking all access to the plugin management pages since the "Downloading ... Installing..." page was showing up each time I tried to access those pages.
This is what I did to resolve the issue :
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