Can you launch your mc and try and join and get kicked for the error and then close your mc and go to .minecraft/logs/latest.log
And upload it as a gist or paste bin or something:
https://gist.github.com/
https://pastebin.com/
https://paste.gg/
They both work .net is the one that is used more commonly
Also you should try deleting your server resource cache folder in your .minecraft/resourcepacks/
The other thing is we all could be seeing a colour red it just might not be the exact shade of red someone else see so, we can never truly know if everyone sees the exact same red either. In conclusion, we can not trust colours :)