Broken software center

My software center has been broke for days. I am signed in but installations just start at 0% and nothing happens. Probably many reasons why something like this can be wrong but anyone know how to find the problem or what I can try to fix it?

First of all check that your repositories are up to date and there are no warnings.

What is the full terminal output when you run the following?

sudo apt update && sudo apt dist-upgrade