I am having the same issue. I am hosting a LAN game on a Debian machine with Minecraft 1.19.2 and Forge 43.1.43.
I can connect from windows 10 using GDLauncher and the same versions of MC and Forge.
I get this error whenever I try to connect using Either GDLauncher or Prism launcher on any other machine. I have tried to connect from another Debian machine, an Arch machine, a Fedora machine and my steam deck.
Here is a link to the entire debug.log https://mclo.gs/IXFcxAp