chart plugin update to 2.0.4 fails

[Christoph Wild]

I am trying to update the Chart Plugin from 2.0.2 via the add on manager. The update fails with "An unexpected error occurred. Refer to the logs for more information."

The logs in /opt/atlassian/confluence/logs/ contain no further information.

[Karl Royer]

I had this issue - found it was due to the mysql max_allowed_packet was being exceeded. Changed [mysqld] section of my.conf to have

max_allowed_packet=16M

fixed problem.

[John Norton]

Thanks for posting!! this was exactly my problem.

[hsuhailah]

Can you find atlassian-confluence.log in the Confluence home directory? Confluence Home directory is defined in <Confluence install folder>/confluence/WEB-INF/classes/confluence-init.properties file.

Did you encounter the same issue trying to install/update other plugins via the manager? How about manually download the plugin jar from https://marketplace.atlassian.com/plugins/confluence.extra.chart and manually upload it from the manager via "Upload add-on", will it works?

Also, ensure that the url you use to access Confluence via the browser matches the url configured in Confluence Admin > General Configuration > Base URL. This url mismatched could cause a failed plugin installation/update too.