I have the exact same issue, it started around the same time as the OP noticed.
I haven't done any configuration to change it, have done several restarts of the servers, no issues with apache to report, everything working normally, it's just that there is an issue with autodl irssi not updating.
I did try shutting down the service, uninstalling and reinstalling from dashboard after doing box Upgrade, but to no avail. Always same error. I am guessing the quickbox script or whatever part of it installs irssi needs to have some fixes. Any suggestions? Again, no other issues, everything working normally after liara set me up, i have been doing apt-get upgrade and dist-upgrade regularly and restarted a few times.
The output of the command you asked the OP for is here