So I’ve been having this error with this project I’m working on. Fairly new to unreal/blueprints, and have like no clue on what’s happening. I’ve had people say a variable is ‘null’ but I don’t know what that would necessary entail
Read the error message. What does it actually say? Specifically, what is it trying to read, when it gets a None? Where in your game do you use that thing?
Separately, if you pause the game, and click one of those properties with a magnifying glass, in the error log, it will jump you to that part of that blueprint. You can use this to figure out where it’s going wrong, and then look backwards from there to figure out what assumption the blueprint is making that you haven’t set up.
Finally, I don’t think the errors by themselves are necessarily what’s causing lag / crashes, unless you have tens or hundreds of thousands of them. But they may indicate something else that would perhaps re-try starting some process or spawning some object every frame, which in turn would build up a large collection of things, that would eventually overwhelm the engine, for example.