https cert not renewed

[sverhoeven]

On one of the Virtual Machines the https cert was no longer being renewed.

`journalctl -u certbot` logs

Jan 22 19:39:24 host-192-168-0-170 systemd[1]: Starting Certbot...
Jan 22 19:39:24 host-192-168-0-170 certbot[1490357]: Attempting to renew cert (demo2.ewatercycle-nle.src.surf-hosted.nl) from /etc/letsencrypt/renewal/demo2.ewatercycle-nle.src.surf-hosted.nl.conf p>
Jan 22 19:39:24 host-192-168-0-170 certbot[1490357]: All renewal attempts failed. The following certs could not be renewed:
Jan 22 19:39:24 host-192-168-0-170 certbot[1490357]:   /etc/letsencrypt/live/demo2.ewatercycle-nle.src.surf-hosted.nl/fullchain.pem (failure)
Jan 22 19:39:24 host-192-168-0-170 certbot[1490357]: 1 renew failure(s), 0 parse failure(s)
Jan 22 19:39:24 host-192-168-0-170 systemd[1]: certbot.service: Main process exited, code=exited, status=1/FAILURE
Jan 22 19:39:24 host-192-168-0-170 systemd[1]: certbot.service: Failed with result 'exit-code'.
Jan 22 19:39:24 host-192-168-0-170 systemd[1]: Failed to start Certbot.

Certbot renew output

usr/bin/certbot -q renew
Attempting to renew cert (demo2.ewatercycle-nle.src.surf-hosted.nl) from /etc/letsencrypt/renewal/demo2.ewatercycle-nle.src.surf-hosted.nl.conf produced an unexpected error: module 'lib' has no attribute 'X509_get_notAfter'. Skipping.
All renewal attempts failed. The following certs could not be renewed:
  /etc/letsencrypt/live/demo2.ewatercycle-nle.src.surf-hosted.nl/fullchain.pem (failure)

[sverhoeven]

Somehow a certbot dependency has wrong version.

Corrected by installing certbot with snap.