I will post the error logs below, I am using the BMC2 forge modpack for my server with 212 mods.
Currently, these errors are not allowing me to use commands in-game at all (https://prnt.sc/EZ_0QPFPHcVZ this is what it says for all of them except for /help)
The console is also having issues I believe due to the errors as it will not output anything I input, nor will it show me typical console outputs like players joining or leaving etc. I am using scalacube for hosting.
https://pastebin.com/kMqxx57d (Edited after reading forum rules)