after i did sudo apt-get install --reinstall hplip hplip-data sudo apt-get install --reinstall python3
now it seems solved, i don't have the error anymore -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1779237 Title: package python3 3.6.5-3ubuntu1 failed to install/upgrade: installed python3 package post-installation script subprocess returned error exit status 4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python3-defaults/+bug/1779237/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
