in
~/.config/GIMP/_version_number_
there is a directory called:
CrashLog
perhaps it holds something useful?
For lack of knowledge
I’d try
to back up (in case it may contain anything valuable)
and then remove
~/.config/GIMP
and everything in it
… to start anew …
Are you sure that your system is fully updated?
If not - that would be the first thing to ensure.