I cleaned up the code as you advised me and now I have these classes, but despite this I can't render the model and I don't understand why.
It doesn't even show the shadow below, it has no collisions and more. How can I do? I can't find any valid tutorials for 16.5.
Here is the files:
The Entity Class: https://pastebin.com/AYZ0jN2g
The Entity Renderer: https://pastebin.com/3yYX2UxK
The Entity Model: https://pastebin.com/AvxakRaH
The Registry: https://pastebin.com/U6bE24Ts
The Main Mod Class: https://pastebin.com/rDmrLAFA
The lastest debug.log: https://pastebin.com/bGgZL408 (There is nothing strange in my opinion, the initial warning has disappeared)
For the Attributes, i can't use the EntityAttributeCreationEvent because i only for LivingEntity, and my TestVehicleEntity is not a subclass of LivingEntity.