Neoforge Server 1.21.1 Neoforge Version 21.1.42
When trying to select chunks or make active chunks through Journeymap, the game crashes and exits.

Server Console log:
[00:34:51] [Netty Epoll Server IO #3/ERROR] [minecraft/Connection]: Exception caught in connection
io.netty.channel.unix.Errors$NativeIoException: recvAddress(..) failed: Connection reset by peer
[00:34:51] [Server thread/INFO] [minecraft/ServerGamePacketListenerImpl]: Fly0ver lost connection: Disconnected
[00:34:51] [Server thread/INFO] [minecraft/MinecraftServer]: Fly0ver left the game
crash-2024-09-20_08.34.49-client.txt

Same issue here, only crashed on the client, when claiming using the Integration in Journeymap screen it closes the game.

Seems like there are some breaking changes in recent FTBChunks update, I'll take a look in next few days

Should be fixed in v1.6