Can I please get some help. I have foolishly attempted to upgrade from OMV 2.x to 4.x.
The ugprade from 2.x to 3.x using omv-release-upgrade failed, but I tried again... and it seemed to attempt to upgrade from 3.x to 4.x, which also ultimately failed.
Now I have a 502 Bad Gateway error on the webGUI.
What should I first do to diagnose the issue and start fixing this?