I was having the same issue in Kubuntu 20.04. The issue went away after I downgraded libexiv2 from version 0.27.2-8ubuntu2.6 to version 0.27.2-8ubuntu2 as follows:
sudo apt-get install libexiv2-27=0.27.2-8ubuntu2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1943586 Title: Gthumb crashes when trying to open files exported by Darktable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gthumb/+bug/1943586/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
