Can you please share the output of the following commands? apt policy dpkg
update-alternatives --version The location of alternatives.log is determined at build time, which makes me think you might have a locally built version of update-alternatives that tries to write to the wrong location. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1793280 Title: package firefox 62.0+build2-0ubuntu0.18.04.5 failed to install/upgrade: geïnstalleerd firefox pakket post-installation script subproces meldde een fout afsluitstatus 2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1793280/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs