E: The package artisan needs to be reinstalled, but I can't find an archive for it.
E: Internal error opening cache (1). Please report.

This is the error message that I received after going into software sources to try to find a maintenance fix for software manager...

Now what?

I don't know what you mean by package artisan, could you be a tad more detailed about which distribution and version you use?

Because what you describe might well be a distribution specific problem, or just a missing package in your isntallation

@ Mamarok
Hope you don't mind me adding my 2 cents worth? No need to click links they are for OP to consider

there is a artisan plugin for a non-ubuntu package called sublime Text that claims it is
Sublime Text is a sophisticated text editor for code, markup and prose

https://www.sublimetext.com/

so OP may indeed need to expand on what he is using possible he is looking for
https://packagecontrol.io/packages/Artisan

but if he is looking for that he may like to see

This project is no longer maintained