'install-curseforge' command failed on startup

[starkriedesel]

Describe the problem

While trying to install the create astral modpack using AUTO_CURSEFORGE I am getting a 'install-curseforge error. I've tried using latest as well as 2025.4.0 and 2025.3.0 versions of itzg/minecraft-server. Some other modpacks such as all-the-mods-10 do seem to work.

This is a new server with no existing files and the error occurs after downloading what seems like all the mod files.

Container definition

I'm using this kube helm chart. Here's my values.yaml

minecraftServer:
  eula: "TRUE"
  type: "AUTO_CURSEFORGE"
  autoCurseForge:
    apiKey:
      key: "...snip..."
    slug: "create-astral"

Container logs

[mc-image-helper] 18:43:34.433 ERROR : 'install-curseforge' command failed. Version is 1.41.2
reactor.core.Exceptions$RetryExhaustedException: Retries exhausted: 5/5
        at reactor.core.Exceptions.retryExhausted(Exceptions.java:308)
        Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException:
Error has been observed at the following site(s):
        *__checkpoint ⇢ downloadLauncher
        *__checkpoint ⇢ downloadResolvedLauncher
Original Stack Trace:
                at reactor.core.Exceptions.retryExhausted(Exceptions.java:308)
                at reactor.util.retry.RetryBackoffSpec.lambda$static$0(RetryBackoffSpec.java:68)
                at reactor.util.retry.RetryBackoffSpec.lambda$null$4(RetryBackoffSpec.java:608)
                at reactor.core.publisher.FluxConcatMapNoPrefetch$FluxConcatMapNoPrefetchSubscriber.onNext(FluxConcatMapNoPrefetch.java:183)
                at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onNext(FluxContextWrite.java:107)
                at reactor.core.publisher.SinkManyEmitterProcessor.drain(SinkManyEmitterProcessor.java:476)
                at reactor.core.publisher.SinkManyEmitterProcessor.tryEmitNext(SinkManyEmitterProcessor.java:273)
                at reactor.core.publisher.SinkManySerialized.tryEmitNext(SinkManySerialized.java:100)
                at reactor.core.publisher.InternalManySink.emitNext(InternalManySink.java:27)
                at reactor.core.publisher.FluxRetryWhen$RetryWhenMainSubscriber.onError(FluxRetryWhen.java:194)
                at reactor.core.publisher.MonoSubscribeOn$SubscribeOnSubscriber.onError(MonoSubscribeOn.java:152)
                at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondError(MonoFlatMap.java:241)
                at reactor.core.publisher.MonoFlatMap$FlatMapInner.onError(MonoFlatMap.java:315)
                at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onError(FluxContextWrite.java:121)
                at reactor.core.publisher.FluxDoFinally$DoFinallySubscriber.onError(FluxDoFinally.java:119)
                at reactor.core.publisher.FluxDefaultIfEmpty$DefaultIfEmptySubscriber.onError(FluxDefaultIfEmpty.java:156)
                at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondError(MonoFlatMap.java:241)
                at reactor.core.publisher.MonoFlatMap$FlatMapInner.onError(MonoFlatMap.java:315)
                at reactor.core.publisher.MonoTakeLastOne$TakeLastOneSubscriber.onError(MonoTakeLastOne.java:134)
                at reactor.core.publisher.MonoFlatMapMany$FlatMapManyInner.onError(MonoFlatMapMany.java:256)
                at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onError(FluxContextWrite.java:121)
                at reactor.core.publisher.FluxDoFinally$DoFinallySubscriber.onError(FluxDoFinally.java:119)
                at reactor.core.publisher.FluxMapFuseable$MapFuseableConditionalSubscriber.onError(FluxMapFuseable.java:340)
                at reactor.core.publisher.FluxHide$SuppressFuseableSubscriber.onError(FluxHide.java:142)
                at reactor.core.publisher.MonoSubscribeOn$SubscribeOnSubscriber.onError(MonoSubscribeOn.java:152)
                at reactor.core.publisher.MonoStreamCollector$StreamCollectorSubscriber.onError(MonoStreamCollector.java:149)
                at reactor.core.publisher.FluxPeek$PeekSubscriber.onError(FluxPeek.java:222)
                at reactor.core.publisher.FluxFlatMap$FlatMapMain.checkTerminated(FluxFlatMap.java:846)
                at reactor.core.publisher.FluxFlatMap$FlatMapMain.drainLoop(FluxFlatMap.java:612)
                at reactor.core.publisher.FluxFlatMap$FlatMapMain.drain(FluxFlatMap.java:592)
                at reactor.core.publisher.FluxFlatMap$FlatMapMain.onError(FluxFlatMap.java:455)
                at reactor.core.publisher.FluxHandle$HandleSubscriber.onError(FluxHandle.java:213)
                at reactor.core.publisher.FluxMap$MapConditionalSubscriber.onError(FluxMap.java:265)
                at reactor.netty.channel.FluxReceive.terminateReceiver(FluxReceive.java:478)
                at reactor.netty.channel.FluxReceive.drainReceiver(FluxReceive.java:273)
                at reactor.netty.channel.FluxReceive.onInboundError(FluxReceive.java:466)
                at reactor.netty.channel.ChannelOperations.onInboundError(ChannelOperations.java:526)
                at reactor.netty.http.client.HttpClientOperations.onInboundClose(HttpClientOperations.java:349)
                at reactor.netty.channel.ChannelOperationsHandler.channelInactive(ChannelOperationsHandler.java:73)
                at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:303)
                at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:281)
                at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:274)
                at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:81)
                at io.netty.handler.timeout.IdleStateHandler.channelInactive(IdleStateHandler.java:280)
                at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:303)
                at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:281)
                at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:274)
                at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelInactive(CombinedChannelDuplexHandler.java:418)
                at io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:412)
                at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:377)
                at io.netty.handler.codec.http.HttpClientCodec$Decoder.channelInactive(HttpClientCodec.java:410)
                at io.netty.channel.CombinedChannelDuplexHandler.channelInactive(CombinedChannelDuplexHandler.java:221)
                at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:303)
                at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:281)
                at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:274)
                at io.netty.handler.codec.ByteToMessageDecoder.channelInputClosed(ByteToMessageDecoder.java:412)
                at io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:377)
                at io.netty.handler.ssl.SslHandler.channelInactive(SslHandler.java:1192)
                at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:303)
                at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:281)
                at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:274)
                at io.netty.channel.DefaultChannelPipeline$HeadContext.channelInactive(DefaultChannelPipeline.java:1352)
                at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:301)
                at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:281)
                at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:850)
                at io.netty.channel.AbstractChannel$AbstractUnsafe$7.run(AbstractChannel.java:811)
                at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
                at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
                at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
                at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:405)
                at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:998)
                at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
                at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
                at java.base/java.lang.Thread.run(Unknown Source)
        Suppressed: java.lang.Exception: #block terminated with an error
                at reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:104)
                at reactor.core.publisher.Mono.block(Mono.java:1779)
                at me.itzg.helpers.fabric.FabricLauncherInstaller.installUsingVersions(FabricLauncherInstaller.java:71)
                at me.itzg.helpers.curseforge.CurseForgeInstaller.prepareFabric(CurseForgeInstaller.java:965)
                at me.itzg.helpers.curseforge.CurseForgeInstaller.prepareModLoader(CurseForgeInstaller.java:952)
                at me.itzg.helpers.curseforge.CurseForgeInstaller.processModpack(CurseForgeInstaller.java:582)
                at me.itzg.helpers.curseforge.CurseForgeInstaller.resolveModpackFileAndProcess(CurseForgeInstaller.java:395)
                at me.itzg.helpers.curseforge.CurseForgeInstaller.installByRetrievingModpackZip(CurseForgeInstaller.java:257)
                at me.itzg.helpers.curseforge.CurseForgeInstaller.lambda$install$3(CurseForgeInstaller.java:182)
                at me.itzg.helpers.curseforge.CurseForgeInstaller.install(CurseForgeInstaller.java:228)
                at me.itzg.helpers.curseforge.CurseForgeInstaller.install(CurseForgeInstaller.java:181)
                at me.itzg.helpers.curseforge.InstallCurseForgeCommand.call(InstallCurseForgeCommand.java:222)
                at me.itzg.helpers.curseforge.InstallCurseForgeCommand.call(InstallCurseForgeCommand.java:30)
                at picocli.CommandLine.executeUserObject(CommandLine.java:2045)
                at picocli.CommandLine.access$1500(CommandLine.java:148)
                at picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2465)
                at picocli.CommandLine$RunLast.handle(CommandLine.java:2457)
                at picocli.CommandLine$RunLast.handle(CommandLine.java:2419)
                at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2277)
                at picocli.CommandLine$RunLast.execute(CommandLine.java:2421)
                at picocli.CommandLine.execute(CommandLine.java:2174)
                at me.itzg.helpers.McImageHelper.main(McImageHelper.java:178)
Caused by: reactor.netty.http.client.PrematureCloseException: Connection prematurely closed DURING response
        Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException:
Error has been observed at the following site(s):
        *__checkpoint ⇢ Fetching file into directory
        *__checkpoint ⇢ Fetch HEAD of requested file
Original Stack Trace:
[init] [ERROR] Failed to auto-install CurseForge modpack

[itzg]

Seems to be a networking issue

Connection prematurely closed DURING response

Perhaps try it again later.