Error that is installing a mod that isn't in a modpack

[SiggyZav]

I'm a little confused. I'm trying to install a modpack for some friends and I, and it gives me the error that one of the mods (Flerovium) isn't able to be found. But its not in the modpack, and it does exist. I've checked the manifests for the project ID, and its not there, but I can install the modpack clientside just fine, and it still doesn't show up there. I thought excluding it with the option CF_EXCLUDE_MODS: flerovium would work, but it still gives the same error code. I've been at this for about an hour now, and I'm just really confused about it. Especially the exclusion not working, not sure why it won't take it before the modpack starts to download.

compose.yml

services:
   mc:
    image: itzg/minecraft-server:latest
    tty: true
    stdin_open: true
    ports:
      - "25565:25565"
    environment:
      EULA: "TRUE"
      TYPE: "AUTO_CURSEFORGE"
      VERSION: "1.21.1"
      CF_PAGE_URL: "https://www.curseforge.com/minecraft/modpacks/all-the-mons"
      CF_API_KEY: "[Redacted]"
      MEMORY: "4096M"
      MAX_PLAYERS: "15"
      USE_AIKAR_FLAGS: "true"
      TZ: "America/New_York"
      DIFFICULTY: "2"
    volumes:
      - "./data:/data"

Error Log

mc-1  | [init] Running as uid=1000 gid=1000 with /data as 'drwxr-xr-x 3 1000 1000 4096 Feb  3 22:35 /data'
mc-1  | [init] Image info: buildtime=2025-05-26T21:26:23.765Z,version=java21,revision=67b0074a9e4f6318dc961881a15f714547dc77ef
mc-1  | [mc-image-helper] 23:58:44.049 INFO  : Processing modpack 'All the Mons-0.9.0-beta' (all-the-mons) @ 1356598:7552059
mc-1  | [mc-image-helper] 23:58:44.666 ERROR : 'install-curseforge' command failed. Version is 1.41.9
mc-1  | me.itzg.helpers.errors.GenericException: No mods found with slug=flerovium
mc-1  |         at me.itzg.helpers.curseforge.CurseForgeApiClient.lambda$searchMod$2(CurseForgeApiClient.java:148)
mc-1  |         at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:132)
mc-1  |         at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondComplete(MonoFlatMap.java:245)
mc-1  |         at reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:305)
mc-1  |         at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onNext(FluxContextWrite.java:107)
mc-1  |         at reactor.core.publisher.FluxDoFinally$DoFinallySubscriber.onNext(FluxDoFinally.java:113)
mc-1  |         at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:158)
mc-1  |         at reactor.core.publisher.MonoPublishOn$PublishOnSubscriber.run(MonoPublishOn.java:181)
mc-1  |         at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:68)
mc-1  |         at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:28)
mc-1  |         at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
mc-1  |         at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
mc-1  |         at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
mc-1  |         at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
mc-1  |         at java.base/java.lang.Thread.run(Unknown Source)
mc-1  |         Suppressed: java.lang.Exception: #block terminated with an error
mc-1  |                 at reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:104)
mc-1  |                 at reactor.core.publisher.Mono.block(Mono.java:1779)
mc-1  |                 at me.itzg.helpers.curseforge.CurseForgeInstaller.resolveExcludeIncludes(CurseForgeInstaller.java:658)
mc-1  |                 at me.itzg.helpers.curseforge.CurseForgeInstaller.processModpack(CurseForgeInstaller.java:541)
mc-1  |                 at me.itzg.helpers.curseforge.CurseForgeInstaller.resolveModpackFileAndProcess(CurseForgeInstaller.java:395)
mc-1  |                 at me.itzg.helpers.curseforge.CurseForgeInstaller.installByRetrievingModpackZip(CurseForgeInstaller.java:257)
mc-1  |                 at me.itzg.helpers.curseforge.CurseForgeInstaller.lambda$install$3(CurseForgeInstaller.java:182)
mc-1  |                 at me.itzg.helpers.curseforge.CurseForgeInstaller.install(CurseForgeInstaller.java:228)
mc-1  |                 at me.itzg.helpers.curseforge.CurseForgeInstaller.install(CurseForgeInstaller.java:181)
mc-1  |                 at me.itzg.helpers.curseforge.InstallCurseForgeCommand.call(InstallCurseForgeCommand.java:222)
mc-1  |                 at me.itzg.helpers.curseforge.InstallCurseForgeCommand.call(InstallCurseForgeCommand.java:30)
mc-1  |                 at picocli.CommandLine.executeUserObject(CommandLine.java:2031)
mc-1  |                 at picocli.CommandLine.access$1500(CommandLine.java:148)
mc-1  |                 at picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2469)
mc-1  |                 at picocli.CommandLine$RunLast.handle(CommandLine.java:2461)
mc-1  |                 at picocli.CommandLine$RunLast.handle(CommandLine.java:2423)
mc-1  |                 at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2277)
mc-1  |                 at picocli.CommandLine$RunLast.execute(CommandLine.java:2425)
mc-1  |                 at picocli.CommandLine.execute(CommandLine.java:2174)
mc-1  |                 at me.itzg.helpers.McImageHelper.main(McImageHelper.java:178)
mc-1  | [init] [ERROR] Failed to auto-install CurseForge modpack
mc-1 exited with code 1

[GreenestJ]

Its a client side mod try specifying the server pack as it doesn't/shouldn't include client side mods for the install like this (this is the id for the server pack for All The Mons v0.9)
CF_FILE_ID: "7552075"
Only downside is it won't auto update to new server files so you will need to specify the modpack file each time it updates. Well I couldn't get it to work with CF_FILENAME_MATCHER if you can it should auto update server packs.
(This is how I got ATM10 to work for me at least so it should work with ATMons)
All wrong

[GreenestJ]

I have lied. While trying to upgrade ATM10 from 5.4 to 5.5 right after this I found out that it pulled the regular modpack anyway and not from the server files as the server files doesn't have a manifest file so it doesn't work with AUTO_CURSEFORGE and now for some reason particle-effects-reforged is giving the same issue.

[itzg]

You're running an out of date image. There were several fixes yesterday to accommodate CurseForge problems.

#3904

[GreenestJ]

I switched to latest and it works properly now.

I used Meowice flags with graalvm as that ended up giving better performance for me but graalvm image didn't get that as an update from what I can tell (I repulled the image and it didnt work).
(meowice flags didnt seem to make much of a difference on latest thats why I switched to graalvm and it seemed to run better. may have been placebo though)

Thanks though still for getting that fix out so quickly.

[itzg]

Sorry about the graalvm image being stuck without fixes. The instance of tar is giving me trouble in that particular variant and have needed to pause builds of it for now.