Got Hacked and game crashes since then

Hi everyone, I read about some people that got the same issues but I don't know if I can do something to save my run.

I was starting the last dlc, minding my own business and "WayTooManyFeels" invaded me. I automatically picked up a +14 weapon (don't remember which one). Then a message told me my inventory was full, the game then crashed. Now I can still play but cannot access my inventory anymore or the game crashes

Can I do something to fix this ?

Should I report the cheater ? I'm not completely sure about the his username

Thank you guys 🙏