So I have ran into some trouble installing g++. When I try to use the "sudo apt install g++", command it asks me if I really want to install it, and when I say yes, it just leaves me this message: "Insert the „Ubuntu 20.04.2 LTS Focal Fossa - Release amd64 (20210204)” called CD to the /cdrom/ drive and press enter" (Or something like that, I tried to translate it from Hungarian)
I give you an image of my problem, however my Ubuntu is in Hungarian, so i don't think that it would be useful. Here it is: My terminal, under Ubuntu 20.04.02.0
I have already tried to get the .iso file and just mount it to my cd drive, but it didn't solve the problem.
Should I just reinstall Ubuntu or what should I do?