Hello, this is my first time using Quark, and when I started my world with it, as soon as it reaches 100% when loading my world, it crashes. I checked the problem and it states that I have 'Exception ticking world'. From what I know there's a corrupted block somewhere in my world and MC is unable to locate it. I assumed that because it's not a newly generated world, there was some incompatibility. However, after creating a new world and trying to enter it, Minecraft continues to crash. I'm not sure what's going on now.

There are two types of reports I'm going to paste in and there's going to be two different reports, one for the world I have already started building in and another is the newly generated world--I have just created.

New World Crash Report
New World Latest Report Log

My World Crash Report
My World Latest Log

I have already checked for the latest versions of all the mods that I have for 1.16.4 and I'm up to date on all of them. MC forge is also to the latest version. The only mod that isn't 1.16.4 is HWYLA but I didn't see anything mentioning that mod and neither have I experienced any problems with it prior to this. Other things you might like to know: I disabled the automatic recipe unlock function and the variant animal texture option.

I'm rather new to reporting an issue--so please let me know if I'm missing any information, I'm willing to provide it. Thank you.

Can you reproduce this without optifine?

I've tried what you requested for both worlds and the game can now load without any problems. Thank you very much~ ;]