Why does all my server scripts not work but only my local scripts?

So im currently debugging and now all of a sudden, ALL server scripts don't work, it was working previously, but even placing a "Print" function doesn't work even at the start, none of them are disabled and all under ServerScriptService. My local client scripts work fine. This is awfully frustrating.

EDIT

Just realised that nothing actually functions after using require on a module script.