For me, fixed the issue: `AttributeError: module 'acme.challenges' has no attribute 'TLSSNI01' ` in Ubuntu 20.04
$ dpkg -l python3-certbot-nginx Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-=====================-=================-============-================================= ii python3-certbot-nginx 0.40.0-0ubuntu0.1 all Nginx plugin for Certbot -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875471 Title: python3-certbot-nginx is incompatible with its dependencies To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python-certbot-nginx/+bug/1875471/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
