how to fix ABP_Manny?

when I start the game, the engine crashes.

Try with this node TryGetPawn, you don’t need to cast to a character.

And make sure your specific character is on the level map.

Did I do the right thing?

Try to disconnect the event blueprint initialise to break down where the issue could be.

This is the proper setup.

Try Get Pawn Owner → Cast to your ACTUAL character class → set ref to character class → set ref to character movement component.

I don’t understand anything.
everything worked before, why are there any errors now?

just breakdown the code, add some print string for example print the output pin of get owning actor to see which object it outputting.