I run a raspberry pi 4. I have just installed ffmpeg for my discord music bot. For the bot to play music I installed ffmpeg, using "sudo apt install ffmpeg" and then "sudo add-apt-repository ppa:jonathonf/ffmpeg-4". I used this video as installation guide https://www.youtube.com/watch?v=tf4p-SMw5jA.
After installation when I ran "sudo apt update":
When I got this error I didn't really care and moved on, later I wanted to update pi-hole. Then I got this error: