Certbot suddenly failing

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Hi, yes, it is a virtual machine on a cloud provider somewhere. Requested command outputs follow:

~$ sudo apt-get update
Hit:1 http://archive.canonical.com/ubuntu xenial InRelease
Hit:2 http://security.ubuntu.com/ubuntu xenial-security InRelease
Hit:3 http://apt.postgresql.org/pub/repos/apt xenial-pgdg InRelease
Hit:4 http://ppa.launchpad.net/certbot/certbot/ubuntu xenial InRelease
Hit:5 http://archive.ubuntu.com/ubuntu xenial InRelease
Hit:6 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:7 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu xenial InRelease
Hit:8 http://ppa.launchpad.net/webupd8team/java/ubuntu xenial InRelease
Reading package lists... Done
:~$ sudo apt-cache policy snapd
snapd:
  Installed: 2.48
  Candidate: 2.48
  Version table:
 *** 2.48 500
        500 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     2.45.1ubuntu0.2 500
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
     2.0.2 500
        500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
~$ uname -r
2.6.32-042stab120.11
~$