Jenkins setup: Upgrade from 2.361 to 2.479.1
I see warning “You have data stored in an older format and/or unreadable data.” after jenkins upgrade. On the Manage old data page, I get multiple “CannotResolveClassException: iconClassName” listed under type jenkins.branch.MultiBranchProject$State.
I had deleted few deprecated plugins. Is that what is causing this error?
Can someone help me understand which plugin is causing this error. Is it expected, will it have any impact.