[Internal Exception: io.netty.handler.codec.DecoderException: net.minecraft.ResourceLocationException]

serverlog:https://pastebin.com/3aAMAtE9

the server starts up fine but when i join i get the error on the title and cant join

[game crashes when joining server]

crash report:https://pastebin.com/h1phJPwr

[server wont start up after mod added]

hmm alright ty😄

[server wont start up after mod added]

I added a mod called world of bosses to my server and i updated gecko which is a dependency and now server wont start up

Crash log:https://pastebin.com/KPrXx1SR 

[when i try to join my server i get internal exception java.lang.illegalargumentexception unknown recipe serializer minecraft]

thank you for the advice i found which mod was causing the problems

[when i try to join my server i get internal exception java.lang.illegalargumentexception unknown recipe serializer minecraft]

Ive been trying to fix this for two days now i dont know what to do please help

this is the client log:https://pastebin.com/bcBdJvU7

this is the server log:https://pastebin.com/2Zid4AGa

and this is the server debug log:https://drive.google.com/file/d/12B7pc9yX2-IEV19AMnGcAfx-fk_yj-8U/view?usp=sharing