Nexus upgrade failed. Unable to stop/remove tasks


I was doing an upgrade from version 3.14 to 3.37.0 but got db issues. I rolled back then found this issue with my tasks. I cant even access some of my artifacts also. Seems like something bad happened to my db. Please help

This is the error in the logs

Error in data flush background thread, please restart database and send full stack trace inside of bug report DB name=“component”

When you say rolled back, did you restore from backup? Once you’ve started a newer version of Nexus the database may be modified in an incompatible way. (Almost certainly the case jumping 4-years of releases)