New Server Admin, Issue with adding Mod

services:
  minecraft:
    image: itzg/minecraft-server
    container_name: minecraft
    user: 1000:1000
# In order to attach and interact with the Minecraft server make sure to enable TTY and keep stdin open.
    tty: true
    stdin_open: true
    environment:
      TZ: America/Denver
      EULA: "true"
      TYPE: FABRIC
      VERSION: "1.21.11"
#      FABRIC_INSTALLER_VERSION: 1.0.1
#      FABRIC_LOADER_VERSION: 0.16.10
      # Since Fabric server type only includes the loader, most times
      # the fabric-api is required for other mods to function
      MODRINTH_PROJECTS: |
        fabric-api
        multiworld
        fastrtp
        simple-voice-chat
        enhanced-groups: fabric-1.21.11-1.7.1=beta
      ENABLE_ROLLING_LOGS: "true"
      MAX_MEMORY: 10G
      MAX_BUILD_HEIGHT: 256
      VIEW_DISTANCE: 15
      LEVEL_TYPE: large_biomes
      MAX_PLAYERS: 10
      CONSOLE: "true"
      USES_PLUGINS: "true"
      ALLOW_FLIGHT: "true"
      ENABLE_COMMAND_BLOCK: "true"
      MOTD: "The XYZ Family\'s Creative Minecraft Server!!"
      RCON_PASSWORD_FILE: /run/secrets/rcon_pass
      FORCE_GAMEMODE: "true"
      MODE: "creative"
      OPS: | # From: https://docker-minecraft-server.readthedocs.io/en/latest/configuration/server-properties/#opadministrator-players
        TUSER1
        USER2
      OP_PERMISSION_LEVEL: 2 # From https://stickypiston.co/account/knowledgebase/151/What-are-Minecraft-server-Operator-Levels.html
    ports:
      - "25565:25565"
      - "24454:24454/udp" # Simple Voice Chat port
    volumes:
      - /opt/docker/minecraft/data:/data
      - /opt/docker/minecraft/mods:/mods
      - /opt/docker/minecraft/plugins:/plugins:ro
    restart: always
    secrets:
      - rcon_pass

secrets:
  rcon_pass:
    file: /opt/docker/rcon_password # Local password file

enhanced-groups