Game crash upon colliding with any world object.

[Goobie]

Hello, I'm trying to make a excavator/tipper out of a Terrorbyte, just to experiment with different features, however when I spawn the vehicle in game and the vehicle collides with something solid, my game crashes.

As far as I am aware (Maybe I've done it wrong, though) I have all the necessary collisions in zmodeler, and it's being streamed as an addon in FiveM with the correct meta files, so I cannot figure out what seems to be the issue.
I'm fairly certain the issue lies in the actual Z3D file itself, so I've attached it (it's pretty frankenstein's monster looking, but it's just an experiment)

I'd love if someone could help me pinpoint this issue, I'm probably missing something stupidly obvious but at this point I've been looking at it for 2 days and can't see the issue.

This is the crash I get:

[Oleg]

make sure there are no objects in metadata that are missing in scene. Also, make sure every object referred to have collision in metadata actually has a collision in scene.