Trying to debug an issue-- Failed to find main class " -Xmx16G"

[robert-clayton]

Been trying all sorts of things trying to get this to work, any help would be appreciated. Keep running into this same issue, no matter the java version I try. :(

Output from docker compose up

mc-1      | [init] Running as uid=1000 gid=1000 with /data as 'drwxr-xr-x. 1 1000 966 500 Sep 29 09:56 /data'
mc-1      | [init] Resolved version given 1.20.1 into 1.20.1
mc-1      | [init] Looking for Feed-The-Beast / CurseForge server modpack.
mc-1      | [init] detected FTB, changing properties path to /data/FeedTheBeast/server.properties
mc-1      | [init] Setting initial memory to 4G and max to 16G
mc-1      | [init] Running FTB /data/FeedTheBeast/start.sh in /data/FeedTheBeast ...
mc-1      | Start script generated by ServerPackCreator 6.3.9.
mc-1      | To change the launch settings of this server, such as JVM args / flags, Minecraft version, modloader version etc., edit the variables.txt-file.
mc-1      | 
mc-1      | Running Forge checks and setup...
mc-1      | Generating user_jvm_args.txt from variables...
mc-1      | Edit JAVA_ARGS in your variables.txt. Do not edit user_jvm_args.txt directly!
mc-1      | Manually made changes to user_jvm_args.txt will be lost in the nether!
mc-1      | server.jar could not be found.
mc-1      | Downloading server.jar
mc-1      | from https://github.com/neoforged/ServerStarterJar/releases/latest/download/server.jar
######################################################################## 100.0%           
mc-1      | Download complete.
mc-1      | true
mc-1      | 
mc-1      | 
mc-1      | Starting server...
mc-1      | Minecraft version:              1.20.1
mc-1      | Modloader:                      Forge
mc-1      | Modloader version:              47.3.7
mc-1      | LegacyFabric Installer Version: 1.0.0
mc-1      | Fabric Installer Version:       1.0.1
mc-1      | Quilt Installer Version:        0.9.2
mc-1      | Java Args:                       -Xmx16G -Xms4G  
mc-1      | Additional Args:                -Dlog4j2.formatMsgNoLookups=true
mc-1      | Java Path:                      java
mc-1      | Wait For User Input:            true
mc-1      | Run Command:       java -Dlog4j2.formatMsgNoLookups=true @user_jvm_args.txt -Djava.security.manager=allow -Dfml.queryResult=confirm -jar server.jar --installer-force --installer https://files.minecraftforge.net/maven/net/minecraftforge/forge/1.20.1-47.3.7/forge-1.20.1-47.3.7-installer.jar nogui
mc-1      | Java version:
mc-1      | openjdk version "17.0.11" 2024-04-16
mc-1      | OpenJDK Runtime Environment Temurin-17.0.11+9 (build 17.0.11+9)
mc-1      | OpenJDK 64-Bit Server VM Temurin-17.0.11+9 (build 17.0.11+9, mixed mode, sharing)
mc-1      | 
mc-1      | Exception in thread "main" java.lang.Exception: Failed to find main class " -Xmx16G"
mc-1      | 	at net.neoforged.serverstarterjar.Main.mainLaunch(Main.java:254)
mc-1      | 	at net.neoforged.serverstarterjar.Main.main(Main.java:70)
mc-1      | 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
mc-1      | 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
mc-1      | 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
mc-1      | 	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
mc-1      | 	at net.neoforged.serverstarterjar.Main8.main(Main8.java:19)
mc-1      | Caused by: java.lang.ClassNotFoundException:  -Xmx16G
mc-1      | 	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
mc-1      | 	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
mc-1      | 	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
mc-1      | 	at java.base/java.lang.Class.forName0(Native Method)
mc-1      | 	at java.base/java.lang.Class.forName(Class.java:375)
mc-1      | 	at net.neoforged.serverstarterjar.Main.mainLaunch(Main.java:252)
mc-1      | 	... 6 more

docker-compose.yml

networks:
  minecraft-network:
    driver: bridge
    ipam:
      config:
        - subnet: 172.18.0.0/16

services:
  lazymc:
    image: ghcr.io/joesturge/lazymc-docker-proxy:latest
    networks:
      minecraft-network:
        ipv4_address: 172.18.0.2
    restart: unless-stopped
    volumes:
      - ./data:/server:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro
    ports:
      - "25565:25565"
  mc:
    image: itzg/minecraft-server:java17-jdk
    networks:
      minecraft-network:
        ipv4_address: 172.18.0.3
    labels:
      - lazymc.enabled=true
      - lazymc.group=mc
      - lazymc.server.address=mc:25565
      - lazymc.public.version=1.20.1
      - lazymc.public.protocol=760
      - lazymc.server.forge=true
    tty: true
    stdin_open: true
    restart: no
    environment:
      EULA: "TRUE"
      VERSION: "1.20.1"
      INIT_MEMORY: "4G"
      MAX_MEMORY: "16G"
      RCON_PASSWORD: ####
      TYPE: CURSEFORGE
      CF_SERVER_MOD: /modpacks/BMC4v32.5.zip
    volumes:
      - ./data:/data
      - ./modpacks:/modpacks:ro

[robert-clayton]

Would provide more info, but not sure what's relevant. Currently have openjdk 17 installed, running this docker container on a fedora41 workstation, trying to get a Better Minecraft server up and running with plans to shove it onto my NAS for life

[robert-clayton]

mc-1      | + export HOME=/data
mc-1      | + HOME=/data
mc-1      | ++ id -u
mc-1      | ++ id -g
mc-1      | ++ ls -lnd /data
mc-1      | + log 'Running as uid=1000 gid=1000 with /data as '\''drwxr-xr-x. 1 1000 966 500 Sep 29 09:56 /data'\'''
mc-1      | + local oldState
mc-1      | ++ shopt -po xtrace
mc-1      | + oldState='set -o xtrace'
mc-1      | + shopt -u -o xtrace
mc-1      | [init] 2024-09-29 18:09:48+00:00 Running as uid=1000 gid=1000 with /data as 'drwxr-xr-x. 1 1000 966 500 Sep 29 09:56 /data'
mc-1      | + '[' '!' -e /data/eula.txt ']'
mc-1      | + isTrue false
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + isTrue true
mc-1      | + case "${1,,}" in
mc-1      | + return 0
mc-1      | + set +x
mc-1      | + isTrue false
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + isTrue false
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + [[ -n '' ]]
mc-1      | + fixJavaPath
mc-1      | + which java
mc-1      | + cd /data
mc-1      | + export DECLARED_TYPE=CURSEFORGE
mc-1      | + DECLARED_TYPE=CURSEFORGE
mc-1      | + export DECLARED_VERSION=1.20.1
mc-1      | + DECLARED_VERSION=1.20.1
mc-1      | + isTrue false
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + isTrue false
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + : ''
mc-1      | + case "${TYPE^^}" in
mc-1      | + MOD_PLATFORM=CURSEFORGE
mc-1      | + [[ -n CURSEFORGE ]]
mc-1      | + case "${MOD_PLATFORM^^}" in
mc-1      | + exec /start-deployCF
mc-1      | + [[ 1.20.1 == LATEST ]]
mc-1      | + resolveVersion
mc-1      | + givenVersion=1.20.1
mc-1      | ++ mc-image-helper resolve-minecraft-version 1.20.1
mc-1      | [mc-image-helper] 18:09:49.307 DEBUG : JSON FETCH: uri=https://launchermeta.mojang.com/mc/game/version_manifest_v2.json headers=[user-agent: itzg/mc-image-helper/1.39.3 (cmd=resolve-minecraft-version), x-fetch-session: 974ef016-a2aa-4874-9b8e-59f2efd124f6, accept: application/json, host: launchermeta.mojang.com]
mc-1      | [mc-image-helper] 18:09:49.405 DEBUG : Resolved given Minecraft version 1.20.1 to 1.20.1
mc-1      | + VERSION=1.20.1
mc-1      | + log 'Resolved version given 1.20.1 into 1.20.1'
mc-1      | + local oldState
mc-1      | ++ shopt -po xtrace
mc-1      | + oldState='set -o xtrace'
mc-1      | + shopt -u -o xtrace
mc-1      | [init] 2024-09-29 18:09:49+00:00 Resolved version given 1.20.1 into 1.20.1
mc-1      | + : /data/FeedTheBeast
mc-1      | + export FTB_BASE_DIR
mc-1      | + legacyJavaFixerUrl=https://files.minecraftforge.net/maven/net/minecraftforge/lex/legacyjavafixer/1.0/legacyjavafixer-1.0.jar
mc-1      | + export TYPE=CURSEFORGE
mc-1      | + TYPE=CURSEFORGE
mc-1      | + FTB_SERVER_MOD=/modpacks/BMC4v32.5.zip
mc-1      | + log 'Looking for Feed-The-Beast / CurseForge server modpack.'
mc-1      | + local oldState
mc-1      | ++ shopt -po xtrace
mc-1      | + oldState='set -o xtrace'
mc-1      | + shopt -u -o xtrace
mc-1      | [init] 2024-09-29 18:09:49+00:00 Looking for Feed-The-Beast / CurseForge server modpack.
mc-1      | + [[ ! -n /modpacks/BMC4v32.5.zip ]]
mc-1      | + isTrue true
mc-1      | + case "${1,,}" in
mc-1      | + return 0
mc-1      | ++ findStartScript
mc-1      | ++ entryScriptExpr=(-name ServerStart.sh -o -name serverstart.sh -o -name ServerStartLinux.sh -o -name LaunchServer.sh -o -name server-start.sh -o -name SERVER-START.sh -o -name start-server.sh -o -name startserver.sh -o -name StartServer.sh -o -name run.sh -o -name start.sh -o -name launch.sh)
mc-1      | ++ '[' -d /data/FeedTheBeast ']'
mc-1      | ++ find /data/FeedTheBeast '(' -name ServerStart.sh -o -name serverstart.sh -o -name ServerStartLinux.sh -o -name LaunchServer.sh -o -name server-start.sh -o -name SERVER-START.sh -o -name start-server.sh -o -name startserver.sh -o -name StartServer.sh -o -name run.sh -o -name start.sh -o -name launch.sh ')' -print -quit
mc-1      | + startScript=/data/FeedTheBeast/start.sh
mc-1      | + [[ ! -n /data/FeedTheBeast/start.sh ]]
mc-1      | + [[ ! -n /data/FeedTheBeast/start.sh ]]
mc-1      | ++ find /data/FeedTheBeast -type f -name server-setup-config.yaml
mc-1      | + serverSetupConfig=
mc-1      | + [[ -n '' ]]
mc-1      | + FTB_SERVER_START=/data/FeedTheBeast/start.sh
mc-1      | + export FTB_SERVER_START
mc-1      | ++ dirname /data/FeedTheBeast/start.sh
mc-1      | + FTB_DIR=/data/FeedTheBeast
mc-1      | + export FTB_DIR
mc-1      | + chmod a+x /data/FeedTheBeast/start.sh
mc-1      | + grep fml.queryResult=confirm /data/FeedTheBeast/start.sh
mc-1      | + sed -i 's/.*read.*Restart now/#\0/' /data/FeedTheBeast/start.sh
mc-1      | + legacyJavaFixerPath=/data/FeedTheBeast/mods/legacyjavafixer.jar
mc-1      | + isTrue ''
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + export FAMILY=FORGE
mc-1      | + FAMILY=FORGE
mc-1      | + exec /start-setupWorld
mc-1      | + [[ world =~ ^/.*$ ]]
mc-1      | + '[' CURSEFORGE = CURSEFORGE ']'
mc-1      | + worldDest=/data/FeedTheBeast/world
mc-1      | + [[ -n '' ]]
mc-1      | + exec /start-setupDatapack
mc-1      | + out_dir=/data/world/datapacks
mc-1      | + isTrue false
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + exec /start-setupModpack
mc-1      | + CURSE_URL_BASE=https://minecraft.curseforge.com/projects
mc-1      | + isTrue false
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + handlePackwiz
mc-1      | + [[ -n '' ]]
mc-1      | + handleModpackZip
mc-1      | + [[ -n '' ]]
mc-1      | + handleListings
mc-1      | + usesMods
mc-1      | + case "$FAMILY" in
mc-1      | + return 0
mc-1      | + usesPlugins
mc-1      | + case "$FAMILY" in
mc-1      | + return 1
mc-1      | + usesPlugins
mc-1      | + case "$FAMILY" in
mc-1      | + return 1
mc-1      | + usesMods
mc-1      | + case "$FAMILY" in
mc-1      | + return 0
mc-1      | + outDir=/data/mods
mc-1      | + usesPlugins
mc-1      | + case "$FAMILY" in
mc-1      | + return 1
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + [[ -n '' ]]
mc-1      | + handleGenericPacks
mc-1      | + : ''
mc-1      | + : ''
mc-1      | + : ''
mc-1      | + [[ -n '' ]]
mc-1      | + handleModrinthProjects
mc-1      | + : ''
mc-1      | + : release
mc-1      | + : none
mc-1      | + [[ -v MODRINTH_DOWNLOAD_OPTIONAL_DEPENDENCIES ]]
mc-1      | + [[ -n '' ]]
mc-1      | + usesMods
mc-1      | + case "$FAMILY" in
mc-1      | + return 0
mc-1      | + handleCurseForgeFiles
mc-1      | + args=()
mc-1      | + usesMods
mc-1      | + case "$FAMILY" in
mc-1      | + return 0
mc-1      | + usesPlugins
mc-1      | + case "$FAMILY" in
mc-1      | + return 1
mc-1      | + args+=(--default-category mc-mods)
mc-1      | + case "${TYPE,,}" in
mc-1      | + isFamily HYBRID
mc-1      | + for f in "${@}"
mc-1      | + [[ FORGE == \H\Y\B\R\I\D ]]
mc-1      | + return 1
mc-1      | + mc-image-helper curseforge-files --default-category mc-mods
mc-1      | + [[ -n '' ]]
mc-1      | + exec /start-setupMounts
mc-1      | + isTrue true
mc-1      | + case "${1,,}" in
mc-1      | + return 0
mc-1      | + updateArg=--skip-newer-in-destination
mc-1      | + isTrue true
mc-1      | + case "${1,,}" in
mc-1      | + return 0
mc-1      | + subcommand=sync-and-interpolate
mc-1      | + : /plugins
mc-1      | + : /data/plugins
mc-1      | + usesPlugins
mc-1      | + case "$FAMILY" in
mc-1      | + return 1
mc-1      | + : /mods
mc-1      | + : /data/mods
mc-1      | + usesMods
mc-1      | + case "$FAMILY" in
mc-1      | + return 0
mc-1      | + '[' -d /mods ']'
mc-1      | + : /config
mc-1      | + : /data/config
mc-1      | + '[' -d /config ']'
mc-1      | + exec /start-setupServerProperties
mc-1      | [init] 2024-09-29 18:09:50+00:00 detected FTB, changing properties path to /data/FeedTheBeast/server.properties
mc-1      | + mc-image-helper set-properties --definitions /image/property-definitions.json /data/FeedTheBeast/server.properties
mc-1      | + isTrue ''
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + isTrue false
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + exec /start-setupEnvVariables
mc-1      | + [[ -v APPEND_OPS ]]
mc-1      | + [[ -v OVERRIDE_OPS ]]
mc-1      | + [[ -v APPEND_WHITELIST ]]
mc-1      | + [[ -v OVERRIDE_WHITELIST ]]
mc-1      | + sharedArgs=(--version="$VERSION")
mc-1      | + [[ -n /data/FeedTheBeast ]]
mc-1      | + sharedArgs+=(--output-directory="$FTB_DIR")
mc-1      | + [[ -v OPS_FILE ]]
mc-1      | + [[ -v OPS ]]
mc-1      | + [[ -v WHITELIST_FILE ]]
mc-1      | + [[ -v WHITELIST ]]
mc-1      | + exec /start-finalExec
mc-1      | + '[' -n '' ']'
mc-1      | + canUseRollingLogs=true
mc-1      | + useFallbackJvmFlag=false
mc-1      | + [[ -n /data/FeedTheBeast ]]
mc-1      | + SERVER_DIR=/data/FeedTheBeast
mc-1      | + versionLessThan 1.7
mc-1      | + mc-image-helper compare-versions 1.20.1 lt 1.7
mc-1      | + return 1
mc-1      | + isFamily VANILLA
mc-1      | + for f in "${@}"
mc-1      | + [[ FORGE == \V\A\N\I\L\L\A ]]
mc-1      | + return 1
mc-1      | + isFamily VANILLA
mc-1      | + for f in "${@}"
mc-1      | + [[ FORGE == \V\A\N\I\L\L\A ]]
mc-1      | + return 1
mc-1      | + isType PURPUR
mc-1      | + for t in "${@}"
mc-1      | + [[ CURSEFORGE == \P\U\R\P\U\R ]]
mc-1      | + return 1
mc-1      | + isType PURPUR
mc-1      | + for t in "${@}"
mc-1      | + [[ CURSEFORGE == \P\U\R\P\U\R ]]
mc-1      | + return 1
mc-1      | + versionLessThan 1.18.1
mc-1      | + mc-image-helper compare-versions 1.20.1 lt 1.18.1
mc-1      | + return 1
mc-1      | + false
mc-1      | + versionLessThan 1.7
mc-1      | + mc-image-helper compare-versions 1.20.1 lt 1.7
mc-1      | + return 1
mc-1      | + versionLessThan 1.18.1
mc-1      | + mc-image-helper compare-versions 1.20.1 lt 1.18.1
mc-1      | + return 1
mc-1      | + isTrue false
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + versionLessThan 1.14
mc-1      | + mc-image-helper compare-versions 1.20.1 lt 1.14
mc-1      | + return 1
mc-1      | + [[ '' = false ]]
mc-1      | + expandedDOpts=
mc-1      | + '[' -n '' ']'
mc-1      | + isTrue ''
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + isTrue ''
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + isTrue ''
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + isTrue ''
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + [[ -n 4G ]]
mc-1      | + log 'Setting initial memory to 4G and max to 16G'
mc-1      | + local oldState
mc-1      | ++ shopt -po xtrace
mc-1      | + oldState='set -o xtrace'
mc-1      | + shopt -u -o xtrace
mc-1      | [init] 2024-09-29 18:09:54+00:00 Setting initial memory to 4G and max to 16G
mc-1      | + [[ -n 4G ]]
mc-1      | + JVM_OPTS='-Xms4G '
mc-1      | + [[ -n 16G ]]
mc-1      | + JVM_OPTS='-Xmx16G -Xms4G '
mc-1      | + versionLessThan b1.8
mc-1      | + mc-image-helper compare-versions 1.20.1 lt b1.8
mc-1      | + return 1
mc-1      | + versionLessThan 1.7
mc-1      | + mc-image-helper compare-versions 1.20.1 lt 1.7
mc-1      | + return 1
mc-1      | + rm -f /data/.mc-health.env
mc-1      | + mcServerRunnerArgs=(--stop-duration "${STOP_DURATION:-60}s")
mc-1      | + isTrue false
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + [[ -n '' ]]
mc-1      | + isTrue ''
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + [[ CURSEFORGE == \C\U\R\S\E\F\O\R\G\E ]]
mc-1      | + [[ -n '' ]]
mc-1      | + [[ CURSEFORGE == \C\U\R\S\E\F\O\R\G\E ]]
mc-1      | + mcServerRunnerArgs+=(--shell bash)
mc-1      | + copyFilesForCurseForge
mc-1      | + '[' '!' -e /data/FeedTheBeast/server-icon.png ']'
mc-1      | + cp -f /data/eula.txt /data/FeedTheBeast/
mc-1      | + cat
mc-1      | + '[' -f /data/FeedTheBeast/settings.cfg ']'
mc-1      | + cd /data/FeedTheBeast
mc-1      | + log 'Running FTB /data/FeedTheBeast/start.sh in /data/FeedTheBeast ...'
mc-1      | + local oldState
mc-1      | ++ shopt -po xtrace
mc-1      | + oldState='set -o xtrace'
mc-1      | + shopt -u -o xtrace
mc-1      | [init] 2024-09-29 18:09:55+00:00 Running FTB /data/FeedTheBeast/start.sh in /data/FeedTheBeast ...
mc-1      | + finalArgs=/data/FeedTheBeast/start.sh
mc-1      | + isTrue false
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + isTrue false
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + isTrue false
mc-1      | + case "${1,,}" in
mc-1      | + return 1
mc-1      | + '[' -f /data/FeedTheBeast/variables.txt ']'
mc-1      | + JVM_ARGS=' -Xmx16G -Xms4G  '
mc-1      | + JVM_ARGS=' -Xmx16G -Xms4G  '
mc-1      | + sed -i 's~JAVA_ARGS=.*~JAVA_ARGS=" -Xmx16G -Xms4G  "~' /data/FeedTheBeast/variables.txt
mc-1      | + exec mc-server-runner --stop-duration 60s --shell bash /data/FeedTheBeast/start.sh
mc-1      | Start script generated by ServerPackCreator 6.3.9.
mc-1      | To change the launch settings of this server, such as JVM args / flags, Minecraft version, modloader version etc., edit the variables.txt-file.
mc-1      | 
mc-1      | Running Forge checks and setup...
mc-1      | Generating user_jvm_args.txt from variables...
mc-1      | Edit JAVA_ARGS in your variables.txt. Do not edit user_jvm_args.txt directly!
mc-1      | Manually made changes to user_jvm_args.txt will be lost in the nether!
mc-1      | server.jar could not be found.
mc-1      | Downloading server.jar
mc-1      | from https://github.com/neoforged/ServerStarterJar/releases/latest/download/server.jar
######################################################################## 100.0%           
mc-1      | Download complete.
mc-1      | true
mc-1      | 
mc-1      | 
mc-1      | Starting server...
mc-1      | Minecraft version:              1.20.1
mc-1      | Modloader:                      Forge
mc-1      | Modloader version:              47.3.7
mc-1      | LegacyFabric Installer Version: 1.0.0
mc-1      | Fabric Installer Version:       1.0.1
mc-1      | Quilt Installer Version:        0.9.2
mc-1      | Java Args:                       -Xmx16G -Xms4G  
mc-1      | Additional Args:                -Dlog4j2.formatMsgNoLookups=true
mc-1      | Java Path:                      java
mc-1      | Wait For User Input:            true
mc-1      | Run Command:       java -Dlog4j2.formatMsgNoLookups=true @user_jvm_args.txt -Djava.security.manager=allow -Dfml.queryResult=confirm -jar server.jar --installer-force --installer https://files.minecraftforge.net/maven/net/minecraftforge/forge/1.20.1-47.3.7/forge-1.20.1-47.3.7-installer.jar nogui
mc-1      | Java version:
mc-1      | openjdk version "17.0.11" 2024-04-16
mc-1      | OpenJDK Runtime Environment Temurin-17.0.11+9 (build 17.0.11+9)
mc-1      | OpenJDK 64-Bit Server VM Temurin-17.0.11+9 (build 17.0.11+9, mixed mode, sharing)
mc-1      | 
mc-1      | Exception in thread "main" java.lang.Exception: Failed to find main class " -Xmx16G"
mc-1      | 	at net.neoforged.serverstarterjar.Main.mainLaunch(Main.java:254)
mc-1      | 	at net.neoforged.serverstarterjar.Main.main(Main.java:70)
mc-1      | 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
mc-1      | 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
mc-1      | 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
mc-1      | 	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
mc-1      | 	at net.neoforged.serverstarterjar.Main8.main(Main8.java:19)
mc-1      | Caused by: java.lang.ClassNotFoundException:  -Xmx16G
mc-1      | 	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
mc-1      | 	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
mc-1      | 	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
mc-1      | 	at java.base/java.lang.Class.forName0(Native Method)
mc-1      | 	at java.base/java.lang.Class.forName(Class.java:375)
mc-1      | 	at net.neoforged.serverstarterjar.Main.mainLaunch(Main.java:252)
mc-1      | 	... 6 more
mc-1      | Exiting...
mc-1      | Press any key to continue
mc-1 exited with code 137

[itzg]

Thanks for providing that. Unfortunately the logs don't reveal specific clues so I would need to dig into the behavior further, but the mode you're using is deprecated.

Can you please switch to the supported mode using https://docker-minecraft-server.readthedocs.io/en/latest/types-and-platforms/mod-platforms/auto-curseforge/

[robert-clayton]

I was unsure of how to get the API key mentioned in those docs, so I swapped to FORGE. Could you please elaborate on how to go about it? I'd love to try the newer mode.

[itzg]

It's described at the top of the section https://docker-minecraft-server.readthedocs.io/en/latest/types-and-platforms/mod-platforms/auto-curseforge/#api-key

[robert-clayton]

Upside is it's now working when I give it no modpacks to install. Downside is that it's still failing for the most popular modpack I found on forge... swapped to auto forge type and specified slug & file ID and got this error. :(

.env

CF_API_KEY=###
RCON_PASSWORD=###
VERSION="1.20.1"
INIT_MEMORY=4G
MAX_MEMORY=16G
CF_SLUG=better-mc-forge-bmc4
CF_FILE_ID=5699281

docker-compose.yml

networks:
  minecraft-network:
    driver: bridge
    ipam:
      config:
        - subnet: 172.18.0.0/16

services:
  lazymc:
    image: ghcr.io/joesturge/lazymc-docker-proxy:latest
    networks:
      minecraft-network:
        ipv4_address: 172.18.0.2
    restart: unless-stopped
    volumes:
      - ./data:/server:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro
    ports:
      - "25565:25565"
  mc:
    image: itzg/minecraft-server:java17-jdk
    networks:
      minecraft-network:
        ipv4_address: 172.18.0.3
    labels:
      - lazymc.enabled=true
      - lazymc.group=mc
      - lazymc.server.address=mc:25565
      - lazymc.public.version=${VERSION}
      - lazymc.public.protocol=760
      - lazymc.server.forge=true
    tty: true
    stdin_open: true
    restart: no
    environment:
      EULA: "TRUE"
      VERSION: ${VERSION}
      CF_API_KEY: ${CF_API_KEY}
      RCON_PASSWORD: ${RCON_PASSWORD}
      TYPE: AUTO_CURSEFORGE
      CF_SLUG: ${CF_SLUG}
      CF_FILE_ID: ${CF_FILE_ID}
      INIT_MEMORY: ${INIT_MEMORY}
      MAX_MEMORY: ${MAX_MEMORY}
    volumes:
      # attach the relative directory 'data' to the container's /data path
      - ./data:/data

log

mc-1      | [init] Running as uid=1000 gid=1000 with /data as 'drwxr-xr-x. 1 1000 966 266 Oct  2 02:51 /data'
mc-1      | [mc-image-helper] 02:52:54.244 INFO  : Processing modpack 'BMC4 FORGE 1.20.1 Server Pack v32.5' (better-mc-forge-bmc4) @ 876781:5699281
mc-1      | [mc-image-helper] 02:52:54.714 ERROR : 'install-curseforge' command failed. Version is 1.39.3
mc-1      | com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `me.itzg.helpers.curseforge.model.ManifestFileRef` (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('mods\adorabuild-structures-2.7.0-forge-1.20.1.jar')
mc-1      |  at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 2, column: 15] (through reference chain: me.itzg.helpers.curseforge.model.MinecraftModpackManifest["files"]->java.util.ArrayList[0])
mc-1      | 	at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:63)
mc-1      | 	at com.fasterxml.jackson.databind.DeserializationContext.reportInputMismatch(DeserializationContext.java:1754)
mc-1      | 	at com.fasterxml.jackson.databind.DeserializationContext.handleMissingInstantiator(DeserializationContext.java:1379)
mc-1      | 	at com.fasterxml.jackson.databind.deser.std.StdDeserializer._deserializeFromString(StdDeserializer.java:311)
mc-1      | 	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromString(BeanDeserializerBase.java:1588)
mc-1      | 	at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:197)
mc-1      | 	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:187)
mc-1      | 	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer._deserializeFromArray(CollectionDeserializer.java:361)
mc-1      | 	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:246)
mc-1      | 	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:30)
mc-1      | 	at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:129)
mc-1      | 	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:310)
mc-1      | 	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:177)
mc-1      | 	at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:342)
mc-1      | 	at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4905)
mc-1      | 	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3885)
mc-1      | 	at me.itzg.helpers.curseforge.CurseForgeInstaller.extractModpackManifest(CurseForgeInstaller.java:979)
mc-1      | 	at me.itzg.helpers.curseforge.CurseForgeInstaller.resolveModpackFileAndProcess(CurseForgeInstaller.java:399)
mc-1      | 	at me.itzg.helpers.curseforge.CurseForgeInstaller.installByRetrievingModpackZip(CurseForgeInstaller.java:262)
mc-1      | 	at me.itzg.helpers.curseforge.CurseForgeInstaller.lambda$install$3(CurseForgeInstaller.java:181)
mc-1      | 	at me.itzg.helpers.curseforge.CurseForgeInstaller.install(CurseForgeInstaller.java:218)
mc-1      | 	at me.itzg.helpers.curseforge.CurseForgeInstaller.install(CurseForgeInstaller.java:180)
mc-1      | 	at me.itzg.helpers.curseforge.InstallCurseForgeCommand.call(InstallCurseForgeCommand.java:213)
mc-1      | 	at me.itzg.helpers.curseforge.InstallCurseForgeCommand.call(InstallCurseForgeCommand.java:29)
mc-1      | 	at picocli.CommandLine.executeUserObject(CommandLine.java:2045)
mc-1      | 	at picocli.CommandLine.access$1500(CommandLine.java:148)
mc-1      | 	at picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2465)
mc-1      | 	at picocli.CommandLine$RunLast.handle(CommandLine.java:2457)
mc-1      | 	at picocli.CommandLine$RunLast.handle(CommandLine.java:2419)
mc-1      | 	at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2277)
mc-1      | 	at picocli.CommandLine$RunLast.execute(CommandLine.java:2421)
mc-1      | 	at picocli.CommandLine.execute(CommandLine.java:2174)
mc-1      | 	at me.itzg.helpers.McImageHelper.main(McImageHelper.java:159)
mc-1      | [init] ERROR failed to auto-install CurseForge modpack

[itzg]

I have updated the BMC4 Forge example to the latest version:

https://github.com/itzg/docker-minecraft-server/blob/master/examples/bmc4/docker-compose.yml

FYI it uses Modrinth because I prefer them much more than CurseForge. Also, no API key needed.