[14:26:36] [main/FATAL] [net.minecraft.client.Minecraft]: Unreported exception thrown!
java.lang.NullPointerException: null
at net.minecraft.client.renderer.EntityRenderer.func_78474_d(EntityRenderer.java:1598) ~[buq.class:?]
at net.minecraft.client.renderer.EntityRenderer.func_175068_a(EntityRenderer.java:1392) ~[buq.class:?]
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1259) ~[buq.class:?]
at net.minecraft.client.renderer.EntityRenderer.func_181560_a(EntityRenderer.java:1062) ~[buq.class:?]
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1117) ~[bib.class:?]
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:397) [bib.class:?]
at net.minecraft.client.main.Main.main(SourceFile:123) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_171]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_171]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_171]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_171]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
[14:26:36] [main/INFO] [STDOUT]: [net.minecraft.init.Bootstrap:func_179870_a:553]: ---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 5/21/18 2:26 PM
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
at net.minecraft.client.renderer.EntityRenderer.func_78474_d(EntityRenderer.java:1598)
at net.minecraft.client.renderer.EntityRenderer.func_175068_a(EntityRenderer.java:1392)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1259)
at net.minecraft.client.renderer.EntityRenderer.func_181560_a(EntityRenderer.java:1062)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1117)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:397)
at net.minecraft.client.main.Main.main(SourceFile:123)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

https://pastebin.com/Fd6UsHtF

Not sure what the actual issue is here. I have tested many things, and i think disabling the spawning of entities within the pocket has solved this. Please re-open the issue if you encounter this issue again.