This doesn't need an error log, as you can easily see for yourself that this is incompatible with cubic chunks. I ran a world without this, worked. Ran a world with this, crashed.

crash-2023-07-04_15.19.46-server.txt
but here's the error log anyway, in case it is needed.

CC 1254 loads, but seems to cause CC to crash the int. server because CC threw an exception. 1208 is the advertized supported version. Please devs, update the CC compatiblty to at least 1254, since that's the minimum version for CWG 169, which is the latest stable version.