Internal Exception: java.io.IOException: Connection reset by peer

[TheHunter7123 0]

I made an RLCraft server.
When my friend and I want to join the server, he gets this error:

Failed to login: Invalid session

And when I want to join, this happens:

Fatally missing registry entries

Also this is the log:

https://pastebin.com/tktDBuUV

What should i do in order to resolve this problem

Thanks

Edited November 15 by TheHunter7123

[diesieben07 6684]

Post client logs.