I recently updated Jira to version 8.19.0 server version. I was attempting to update the BigGantt application to the latest (8.2.0), and after got the message that I needed to uninstall, reinstall the older version and update schema before I could use 8.2. Now back on 8.15, when attempting to access BigGantt, I get a splash screen that tells me it will take a few minutes to "warm up", do not uninstall BigGantt until the process is complete. It has been in this state for about 5 hours now, does not appear to be broken, but not sure it's doing anything.
I have no actual experience with this app, the schema may be way out of date AFAIK.
Is there a way out of this?