Mod Version:
1.12.2 - 3.6.1.0

Forge Version:
14.23.5.2855

Link to client log:

The game crashed whilst rendering entity in world
Error: java.lang.NoClassDefFoundError: com/animania/common/entities/sheep/EntityEweBase
Exit Code: -1

Link to crash log:

KTzyqe86.txt

Description:

So basically, when I play on the mod pack of sbeev's industrial revolution curseforge, The mod Dynamic surroundings gives me the error: and all the results online are very difficult to understand to fix this problem. (as you can see of the title that is my error code). Once I crash i am unable to go back in because i crash over and over with the same message code. I took the time to look into it and fix it on my own and 1 of the fixes was [MixinCompat-0.8] but I have no clue how to use it.

• Did you just add the mod to a pack?
  No it was part of the mod pack that I downloaded

• Did it just start crashing, or has it always crashed?
  played for about 2 hours then started seeing it more frequently, restarted my game multiple times to see if that would fix and restarted the PC as well to no avail

• Did you update any other mods in your pack and it started crashing? This includes Forge.
  Nope

• If updating multiple mods did you update one by one or all at once? To help narrow the problem down adding one by one is helpful.
  Nope

• Is the modpack you are using available online somewhere? If the crash is due to mod interaction having the pack available makes things much easier. It is much harder to work these types of issues with a private kitchen sink pack containing 250 mods.

The mod pack is available online ( https://www.curseforge.com/minecraft/modpacks/sbeevs-industrial-revolution ) and has been featured in a Youtube video.