On 1.20.1 Forge on both my server and my client Quark refused to let me connect to my server despite the files being the exact same. I tried older versions of quark and zeta but the server stops connection every time.

I am running forge 1.20.1 47.3.0 and Quark 4.0-458 and zeta 1.0-19

latest.log

the issue was with no fog, thanks

Usually this is fixable by uninstalling the mod "No Fog", and none of us have any clue why this happens. But it looks like you don't have that mod installed? so this is a new case?