No more python interpreters in Pycharm after unattended upgrade?

I work in Pycharm every day. Yesterday everything seemed fine, although in the evening the Pycharm window wasn't showing in the sidebar on my desktop. This morning as I open Pycharm, it says the python interpreter is not configured for my project. I tried to set it, as usual, but there are not options. I seem to no longer have python interpreters.

I checked my update log and it says the following upgrade happened yesterday:

Start-Date: 2021-04-07 08:06:53
Commandline: /usr/bin/unattended-upgrade
Upgrade: libopenexr22:amd64 (2.2.0-11.1ubuntu1.4, 2.2.0-11.1ubuntu1.6)
End-Date: 2021-04-07 08:06:54

I tried to undo it with sudo apt install libopenexr22=2.2.0-11.1ubuntu1.4 and variations of this, because I'm not sure about the exact command, following this post. I got an error every time, because either the package or the version were not found. I also checked the synaptic package manager, but for some reason the history of synaptic doesn't show any updates after February 2020.

I'm not even sure this upgrade caused the problem, but I thought I would try to roll back before reinstalling anaconda. Any suggestions are greatly appreciated.

I am using Ubuntu 18.04.

1 Answer

Try deleting the .idea folder and restarting PyCharm.