Can I see your plugins list?
Can you open the console, and get me a look at the output?
i can't find a playtest console, i don't think there's one atleast on MV. if there is one, could you tell me how to open it?
You have to press F12 to show the console. Don't feel dumb, there is no indication in RPG Maker MV itself anywhere and there is barely any mention of it in the forums. I discovered this by accident when my cat stepped on the keyboard.
I hope this is it.