Ubuntu Keyserver not working? Cannot install PPAs?
Don't worry, the Ubuntu keyserver is just fine! It just so happens the certificates expired during this time period, so all you need to do is update them! I'm going to post the line below so you can copy and paste if you wish. I was frustrated for over a week about not being to install PPAs in my Linux Mint 20.2.
Then, two problems cropped up with OpenShot. 1) The inability to render animated titles with the GPU. 2) The inability to use certain Animated Titles. Both of these issues are related to the appimage version. You need to use the PPA in order to get the version of OpenShot that does not have these problems. Also, I tried to file an issue on GitHub, but it was late, and I didn't end up filing it. I should, because that is how issues get corrected.
-----Line to copy into terminal-----
sudo apt install ca-certificates
-----Thanks-----
The people at Linux Mint for running a forum and making my favorite operating system.
sashkello for stating the problem on the forums and evoludo for posting the solution.
Intro track is music.mp3 from bsp7176
https://freesound.org/people/bsp7176/sounds/570634/
License is Creative Commons 0