Premiere Pro keeps freezing my computer :(

Hey! 

I've been using premiere pro for almost a year now and I've never encountered this issue. Recently while editing I've been encountering crashes. Eventually it turned into complete system freeze on my computer and I have to do a hard restart on my computer. 

Any ideas I can try? I've tried updating my graphics driver and a few other things but nothing's working 😕😕

It started happening when I was exporting a project and then freezed. Now it freezes in the middle of editing