A few days ago I upgrade my Linux mint, but now I see a red cross right in my Taskbar, what does that mean and what should I do to be able to upgrade again?
Please try to trigger the update directly from your terminal by executing the following command:
$ sudo apt update $ sudo apt upgrade
Please paste the terminal output of the apt update command here.
Alternatively, start updated by executing the following command:
Does the issue also occurs to other users on the same system. Can you try create a new user and see if the issue still persists. This way we can narrow down the issue to either system-wide or per user basis.
If still no help. Please also paste here the output of the following command:
$ inxi -r
None of the commands helps to solve the problem, sorry.