You either need to manually edit the /etc/apt/sources.list file, removing the # at the start of all lines beginning # deb-src or, quicker and simpler for most users, enable source repos in the...
Type: Posts; User: ajgreeny; Keyword(s):
You either need to manually edit the /etc/apt/sources.list file, removing the # at the start of all lines beginning # deb-src or, quicker and simpler for most users, enable source repos in the...
I don't understand how running that dist-upgrade command managed to move you from 18.04 to 20.04, though I am aware that the option in the update manager has only recently appeared, a bit later than...