Hi, I recetly hosted a server with an custom modpack for my friends but when I try to join it gives me that error, actually, before I received this message I received the same error but with the number 86 instead of 56.

Here's the debug log, if you need any other thing just tell me.

https://gist.github.com/xXMolgadoGamer01Xx/1d16fd2340fb7e4bc3b179bafe6169a1
Edit: I uploaded it to GithubGist

 

Edited May 6, 20223 yr by El_Molgajete

Now the byte number changed from 56 to 78