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. Furthermore I have not installed "no fog".

I am running forge 1.20.1 47.3.0 and Quark 4.0-460 and zeta 1.0-24
latest.log

for those who want it's the Weapon Throw mode that does this