projectile java entity model appearing broken

Hello I am attempting to make a projectile that has a java entity model. I made the model in Blockbench and it looks like this, 

but when I exported it into Mcreator it ended up flat and broken like so.

I do not know what is causing this, whether it is Blockbench or Mcreator. I have exported it as a Java 3D model for Forge 1.17 - 1.18 (Mojmaps) and made sure to give it a model identifier. If anyone has any advice on how to fix this it would be greatly appreciated.