Can't connect using serverpack and clientpack v28

[Sinan-Karakaya]

Describe the Bug

When connecting, I get a Mismatched mod channel list error, when connecting to a self-host server.

Reproduction Steps

Fetch v28 of the serverpack, and deploy it like so:

services:
  mc_mmc:
    image: itzg/minecraft-server
    container_name: mc_mmc
    ports:
      - 25565:25565
    restart: unless-stopped
    volumes:
      - ./modpacks:/modpacks:ro
      - data_mmc:/data_mmc

    environment:
      EULA: "true"

      TYPE: FORGE
      VERSION: "1.20.1"
      CF_SERVER_MOD: /modpacks/MMC4.zip

      MEMORY: "4G"
      ENABLE_ROLLING_LOGS: "true"
      TZ: "Europe/Paris"

      SERVER_NAME: "Les koupains - MMC"
      OVERRIDE_SERVER_PROPERTIES: "true"
      DIFFICULTY: "normal"
      MAX_TICK_TIME: "-1"
      ALLOW_FLIGHT: "true"
      OPS: ""
      VIEW_DISTANCE: 14
      MAX_PLAYERS: 5
      PVP: "true"
      MOTD: "Welcome Home"
      SNOOPER_ENABLED: "false"

volumes:
  data_mmc:

Try to connect using the v28 client. Error.

Screenshots and Videos

No response

Crash Report or Log

https://pastebin.com/JAkEd7eq

Operating System

Server: Debian 12 / Client: MacOS 14.6.1

Minecraft Version

1.20.1

Modloader

Forge

Modpack Version

v28

Other Mods

No response

[muon-rw]

The v28 serverpack and client install do work together.

We provide Linux startup scripts that work for standard use. For something like a docker deployment you’re on your own, or you might try itzg’s discord. Our issue tracker certainly isn’t the place to ask for support about it.