Go to editor preferences and search for Blueprint Break on Exception.
This makes it so that if there is a null reference exception while in play mode, the game will pause and you’ll be directed to the node where there is the problem.
Just makes life a little easier. Hadn’t seen it mentioned anywhere so figured I’d share.
https://dev.epicgames.com/community/learning/tutorials/qOJV/unreal-engine-blueprint-break-on-exception-easier-blueprint-debugging