Does the issue occur in the editor or during gameplay?
Gameplay
If it's a gameplay issue, please specify which movement system and camera type you're using (free movement vs. grid movement, third-person vs. first-person) or N/A if not applicable:
Grid, first person
Briefly describe the issue you're experiencing:
Using my menu based combat system, the game occasionally hard crashes with the following error
CrashHanderException: Program Crashed
then spams couldn't map PC to fn name
Are there any errors in the in-game debug console or external console window?

Provide the steps necessary to reproduce the issue:
My project is technically a barebones project, just with a bunch of scripts and widgets related to my menu based combat system. It seems to happen when I use the "attack all" button that runs a bunch of execute scripts, so there's a web of scripts running scripts within this. It's one of those things that only happens once in a while
Provide a download link to the bare bones project (strongly recommended if it's an in-game issue, since this helps significantly when attempting to reproduce it; the report will also be given more priority in this case):
I can provide via DM if it helps, as I'd like to keep the scripts closed source for now