Custom Model crashes game

Whenever I try to input a model into the workshop viewer, my game crashes right after it loads it. Theres a message in the top right saying its missing a texture, but I don’t think that would be the issue.

Ofc I have no clue what I’m doing and could have just messed up when trying to export it from blender.

Here’s the file if anyone wants to point out whats causing this

Many thanks

I added textures and I’m not sure what happened

My game no longer crashes, but now it looks like this monstrosity, disappearing and reappearing rapidly.
I also noticed that if I reopened the previous version it would appear, but with missing textures.
I think all thats left is to fix the bones, but any advise on doing this would be appreciated.

Updated File:

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