And then, later, ThaumicHorizon causing some exceptions in their packet code.
Is that log from the player that gets kicked out? Or the one that joins 2nd?
That log is from the player who is on the server first, when the other player (miner_rondor) joins, causing VenomFrog to get a "fatal error...." message.
I will try to remove thaumichorizon from server, delete world, and retry with same process (venomfrog joins first, miner_Rondor joins after)
here is a list of mods that are zipped, i know the ic2 folders and some other folders are missing i cropped it poorly, but im showing you the zipped folders. I downloaded them from curseforge or minecraftforum directly, dont know why they zipped.