I tried spawning my entity, but it did not work and I got this error: Time: 16/01/20 18.17 Description: Unexpected error java.lang.NullPointerException: Unexpected error at net.minecraft.client.renderer.entity.EntityRendererManager.func_229086_a_(EntityRendererManager.java:232) ~[forge-1.15.1-30.0.39_mapped_snapshot_20190719-1.14.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A} at net.minecraft.client.renderer.WorldRenderer.func_228426_a_(WorldRenderer.java