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AE2 system freeze, UnknownFormatConversion error in logs #3911

Ricket opened this issue Jan 21, 2019 · 0 comments


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commented Jan 21, 2019

Describe the bug
Suddenly can't withdraw or deposit items from my AE2 system. Other AE2 systems in the server working fine.

To Reproduce
Not sure. I have storage drawers with a storage bus. Been playing for many hours without hitting this error so it seems to be a rare case.

Expected behavior
system should work fine

Additional context
This error showed up in the server logs around the time that my system became non functional:

[19:20:00] [Server thread/FATAL] [minecraft/MinecraftServer]: Error executing task
java.util.concurrent.ExecutionException: java.util.UnknownFormatConversionException: Conversion = '1'
        at ~[?:1.8.0_191]
        at java.util.concurrent.FutureTask.get( ~[?:1.8.0_191]
        at net.minecraft.util.Util.func_181617_a(SourceFile:47) [h.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q( [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q( [nz.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p( [MinecraftServer.class:?]
        at [MinecraftServer.class:?]
        at [?:1.8.0_191]
Caused by: java.util.UnknownFormatConversionException: Conversion = '1'
        at java.util.Formatter.checkText( ~[?:1.8.0_191]
        at java.util.Formatter.parse( ~[?:1.8.0_191]
        at java.util.Formatter.format( ~[?:1.8.0_191]
        at java.util.Formatter.format( ~[?:1.8.0_191]
        at java.lang.String.format( ~[?:1.8.0_191]
        at appeng.core.AELog.log( ~[AELog.class:?]
        at appeng.core.AELog.warn( ~[AELog.class:?]
        at ~[ItemHandlerAdapter.class:?]
        at ~[ItemHandlerAdapter.class:?]
        at ~[MEPassThrough.class:?]
        at ~[MEInventoryHandler.class:?]
        at ~[NetworkInventoryHandler.class:?]
        at ~[NetworkMonitor.class:?]
        at appeng.util.Platform.poweredExtraction( ~[Platform.class:?]
        at appeng.util.Platform.poweredExtraction( ~[Platform.class:?]
        at appeng.container.AEBaseContainer.doAction( ~[AEBaseContainer.class:?]
        at appeng.core.sync.packets.PacketInventoryAction.serverPacketData( ~[PacketInventoryAction.class:?]
        at$ ~[AppEngServerPacketHandler$1.class:?]
        at appeng.core.sync.AppEngPacket.func_148833_a( ~[AppEngPacket.class:?]
        at$ ~[hv$1.class:?]
        at java.util.concurrent.Executors$ ~[?:1.8.0_191]
        at ~[?:1.8.0_191]
        at net.minecraft.util.Util.func_181617_a(SourceFile:46) ~[h.class:?]
        ... 5 more

It looks like this warning line is bad, should probably have %s or %d instead of %1, according that exception text.


  • Minecraft Version: 1.12.2
  • AE2 Version: appliedenergistics2-rv6-stable-6.jar
  • Forge Version:

yueh added a commit that referenced this issue Apr 20, 2019

@yueh yueh closed this in 8a4c9b5 Apr 21, 2019

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