Possible Fixes

Yes

Modpack Version

10-1.1

What happened?

After updating the Modpack to Version 10-1.1 and the server files to the version to files attached to modpack it gives error that Client Neoforge Version is wrong.

Lost Connection when attempting to connect to my server.

latest.log

https://gist.github.com/majestic44/14b3ae49e7f5b944d122d7dd902f537d

Developer reports

No response

If the Neoversion has changed during the modpack update the linux server script will not install the new version (dont know if it updates on Windows). You have to replace $FORGE_VERSION with $NEOFORGE_VERSION inside of startserver.sh. In case this doesn`t work you can remove the libraries folder and execute startserver.sh again. This should fix your problem.

Hello,

We've got the same issue on our server with a friend.
The Neoforge version for the client (ATM10 1.1) is 21.1.69, whereas the one for the server (still ATM10 1.1) is 21.1.71.

We got the same error message, leading us to update the Neoforge version for our client to 21.1.71. But we still got the same message even though our client gives us the correct Neoforge version.

Downgrading server to neoforge 21.1.69 doesn't work, basically the client pack needs to be updated to .71 for it to be fixed.

I had this same issue but with 21.1.72. The problem was when I updated the server, I overwrote the existing server files with the new ones instead of creating a whole new server directory and copying my world over to it.