Failed to render Java model

I spent hours working on a Utah Raptor model in blockbench, exported it as a .java model, put it in mcreator, but now when attempting to run the test client, it crashes. The report says:

 java.lang.IllegalArgumentException: Failed to create model for arkraft:utah_raptor

    at net.minecraft.client.renderer.entity.EntityRenderers.lambda$createEntityRenderers$2(EntityRenderers.java:40) ~[forge-1.20.1-47.3.0_mapped_official_1.20.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}

if you need the full log, let me know. I found no Information on this topic in knowledgebase