Common sense Info
To check a checkbox: Insert a lower case X between the square brackets, you need to remove the space though.

• I play...
  • With a large modpack
  • Only with CQR and it's dependencies
• The issue occurs in...
  • Singleplayer
  • Multiplayer
• I have searched for this or a similar issue before reporting and it was either (1) not previously reported, or (2) previously fixed and I'm having the same problem.
• I am using the latest version of the mod (all versions can be found on github under releases)
• I read through the FAQ and i could not find something helpful (FAQ)
• I reproduced the bug without any other mod's except forge, cqr and it's dependencies
• The game crashes because of this bug

Versions
Chocolate Quest: Beta 6.2
Forge:14.23.5.2859
Minecraft:1.12.2

Describe the bug
A clear and concise description of what the bug is:

Game crash do to some render issues with Exterminator Prototype Boss.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...' a new flat world
2. Use item '....' spawn egg for the Boss
3. Place block '....' no block needed
   .
   .
   .
4. See error
   Description: Rendering entity in world

java.lang.AbstractMethodError: software/bernie/geckolib3/renderers/geo/GeoLayerRenderer.render(Lnet/minecraft/entity/EntityLivingBase;FFFFFFLjava/awt/Color;)V
Expected behavior

A clear and concise description of what you expected to happen.

Games shouldn't die/crash

Screenshots
none
If applicable, add screenshots to help explain your problem.

Other
Personal Note:
I already tried to downgrade step by step the CQR mod and its dependencies.
This issue appear with the newest version from geckolib that was released 6days ago.
I started fresh with a bigger modpack and it works now fine with an older geckolib build from 4 December 2021.

Hope this hint helps!

I wish all of you a Merry Christmas and a Happy New Year!
My English writing skills are not the yellow from the egg but I did my best.
Link to crashreport: https://paste.gg/p/anonymous/a567664fbb6549b0984ec1ff5497434f

Please note: log files and crash reports should be uploaded as a FILE and not as a copy paste of the text of it here. Upload the file to a site like pastebin or similar and link it here!!

• Link to Crash report file (only if the game crashes because of this bug, please use something like pastebin to upload it, then link it here):
• Link to Log file (only if the game crashes because of this bug, please use something like pastebin to upload it, then link it here):
• Other mods (that are necessary to produce the bug):
• Other mods (that are also installed, at best: link a zip file that contains all the installed mods):
• CQR config folder (link, only if you changed the configs):
• Other mod's configs (link, only if any config was changed):

Not reproducable, report to geckolib.

Will talk to the geckolib devs later.

You're also running cqr v2.6.1B (taken from your crashlog), update it.