I have several problems regarding updates and installing applications on my server.
Today I wanted to do some updates on my server when I encountered some errors.
First I tried it via the webinterface. When I hit "check" to check for updates under the update-panel I got an error message (see "webinterface error message.txt" in attachments webinterface error message.txt ).
Since that didn't work I tried it via the CLI using "sudo apt-get update". When doing that I also got an big error message. (see "CLI error message.txt" in attachments CLI error message.txt ).
I am not sure what could have caused this and how to fix it.
Some weeks ago I had also trouble with pulling stuff from hub.docker.com due to some certificate issues. But that problem is now fixed.
Thank you in advance.