Issue (The better the description the better i can solve the issue):

I was playing with 56 other mods in creative mode when my game crashed.

Steps to reproduce:

I created a new world using The Lost Cities mod, biosphere configuration. I was flying around when my game crashed.

Affected Versions (Latest is NOT a version):

• Minecraft: 1.12.2
• Forge: 14.23.5.2847
• TenshiLib: 1.2.3
• Improved Mobs: 1.6.2

Other Mods (If you think it might be cause of an incompability):

Logs (Use a site like pastebin, gist etc. DONT COPY PASTE THE LOG IN HERE):

https://paste.dimdev.org/ezatepacap.mccrash