Describe the bug
When I start my world the game crashes before finishing loading.

Crash report
https://pastebin.com/hgbLVrhU

Screenshots
If applicable, add screenshots to help explain your problem.

Please complete the following information:

• Minecraft Version: 1.12.2
• Mod Version: 6.0

Try allocating more memory for Minecraft. I recommend allocating 4 GB or higher.