New to rpinting and have no idea what happened here

I have no idea what happened or how to fix it help please

Apparently a filament leak.
Gently clean your nozzle and check if your heatbreak is properly tightened.

More research since i posted this and i agree…unfortunately i dont think i can clear the heat sync…i ordered a new extruder and stripped this one of parts (fans and control board) stillnot sure what caused it but at least i learned what to look for. It appears it had a silicon cover on it is it normal to run it with this silcone cover or should it be removed?

You have to keep this sock, it’s a security.