HadronHarve

I used to only forward ports. But when I transfer the server to the dedicated server, I was reminded to set up the firewall port rules. In the end, I did it and never saw this error again.

Here is latest Client log and Server debug: Client&Server-debug.rar

Ok, i will upload soon as i can.

OPS, I edited my post with debug.

Here is server debug: debug-1.log.gz Right now, I don`t have access to the friend's client log, because he deleted it. So, here is my log where i successfully connected to my server: 2020-09-15-3.log.gz

The name is debug-1.log because the last log was started after deleting the config. My files are queued.

Here is debug: debug-1.log

I check versions of client`s and server`s mods using total commander, so version are same. Also, I export and install modpack via twitch.

I made modpack and server by editing another. Everything is fine when I connect to the server using the local network. But when my friend connects to my server using an external IP, he has this error: Client log: [12:38:13] [Render thread/INFO]: Connecting to 82.193.116.197, 25565 [12:38:15] [Render thread/INFO]: Injecting existing registry data into this CLIENT instance [12:38:15] [Render thread/INFO]: Registry TileEntityType: Found a missing id from the world quark:matrix_enchanting [12:38:15] [Render thread/INFO]: Registry ContainerType: Found a missing id from the world quark:matrix_enchanting [12:38:15] [Render thread/ERROR]: Unidentified mapping from registry minecraft:block_entity_type quark:matrix_enchanting: 70 [12:38:15] [Render thread/ERROR]: Unidentified mapping from registry minecraft:menu quark:matrix_enchanting: 33 [12:38:15] [Render thread/ERROR]: Missing registry data for network connection: minecraft:menu: quark:matrix_enchanting minecraft:block_entity_type: quark:matrix_enchanting [12:38:15] [Netty Client IO #2/ERROR]: Failed to load registry, closing connection. [12:38:15] [Netty Client IO #2/ERROR]: Connection closed, not continuing handshake Server log: [12:38:15.319] [User Authenticator #3/INFO] [net.minecraft.network.login.ServerLoginNetHandler/]: UUID of player AngelHalfDaemon is 5eeabda8-e8c0-4afa-9f5e-4c02d058f76f [12:38:16.466] [Server thread/INFO] [net.minecraft.network.login.ServerLoginNetHandler/]: com.mojang.authlib.GameProfile@11644c47[id=5eeabda8-e8c0-4afa-9f5e-4c02d058f76f,name=AngelHalfDaemon,properties={textures=[com.mojang.authlib.properties.Property@46072232]},legacy=false] (/82.193.122.171:49789) lost connection: Disconnected What we do: Reinstall server and client; Recreate server and client; Delete quark config from client and server to regenerate it. Nothing has changed, but when we remove the quark, then there will be no error. I would like to return the quark so I need your help. if It needs, I can upload the modpack and server.