I have Ubuntu 18.10 and want to update to 20.04 LTS but after this standard procedure:
sudo apt update
sudo apt upgrade
sudo apt dist-upgrade
sudo apt autoremove
sudo do-release-upgrade
But when I execute the last command I got this: Please install all available updates for your release before upgrading.
I noticed that when I upgrade I got this: 0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.
I can't complete the upgrade because I have some 404, can someone help me about this issue? I am really rusty with this OS and i surely don't want to uninstall and reinstall!
