IshaanPlayz

I want to play a mod with guns in minecraft therefore i downloaded the best gun mod and i started the game *and i only had one mod not like 10 mods at the same time* the game started and i made a new world and when i opened my inventory and selected the 2nd modded inventory shutting down internal server was the screen i had and this is the crash report Pls help i wanna play that mod and i dont remember if i downloaded that mod from 9minecraft or curseforge