I had this same bug on upgrading to 20.04. In my case smb.conf had the line:
name resolve order = hosts lmhosts wins bcast And the smb.conf checking complained with a warning that "hosts" was invalid. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1899488 Title: package samba-common-bin 2:4.11.6+dfsg-0ubuntu1.5 failed to install/upgrade: installed samba-common-bin package post-installation script subprocess returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1899488/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
