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"addPage" Null Pointer Exception #99

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AlfieSR opened this issue Mar 23, 2015 · 8 comments
Closed

"addPage" Null Pointer Exception #99

AlfieSR opened this issue Mar 23, 2015 · 8 comments
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bug thaumcraft

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@AlfieSR
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AlfieSR commented Mar 23, 2015

[16:14:57] [Server thread/ERROR]: Couldn't process command: 'mt reload' java.lang.NullPointerException at modtweaker.mods.thaumcraft.research.AddPage.undo(AddPage.java:113) ~[AddPage.class:?] at minetweaker.runtime.MTTweaker.rollback(MTTweaker.java:83) ~[MTTweaker.class:?] at minetweaker.MineTweakerImplementationAPI.reload(MineTweakerImplementationAPI.java:589) ~[MineTweakerImplementationAPI.class:?] at minetweaker.MineTweakerImplementationAPI$1.execute(MineTweakerImplementationAPI.java:82) ~[MineTweakerImplementationAPI$1.class:?] at minetweaker.MineTweakerImplementationAPI$19.execute(MineTweakerImplementationAPI.java:610) ~[MineTweakerImplementationAPI$19.class:?] at minetweaker.mc1710.server.MCServer$MCCommand.func_71515_b(MCServer.java:124) ~[MCServer$MCCommand.class:?] at net.minecraft.command.CommandHandler.func_71556_a(CommandHandler.java:94) [z.class:?] at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:739) [nh.class:?] at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:718) [nh.class:?] at net.minecraft.network.play.client.C01PacketChatMessage.func_148833_a(SourceFile:37) [ir.class:?] at net.minecraft.network.play.client.C01PacketChatMessage.func_148833_a(SourceFile:9) [ir.class:?] at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?] at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165) [nc.class:?] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659) [MinecraftServer.class:?] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547) [MinecraftServer.class:?] at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111) [bsx.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?] at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [?:?]

Not actually sure what's causing this. Previously the error was related to refreshing research recipes so I cleared and recreated the pages where I was previously refreshing them, and now this has come up instead.

This issue prevents the loading of more than one world in a single gamesession (singleplayer worlds will kick you back to menu, multiplayer worlds will disconnect you with an Internal Error), and causes /mt reload to fail with an internal error (causing the above in console/logs).

Attempting to load more than one world in a gamesession will also cause a memory leak, causing java to need to be shut through task manager.

A zip containing all of the zs files I have that utlise research modification can be found here
https://www.dropbox.com/s/3yh1w7kjw1efykt/scripts.rar?dl=0
I don't claim for any of them to be balanced, as they are for a private modpack circulated amung a total of 3 people including myself.
@AlfieSR
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AlfieSR commented Mar 24, 2015

After a bit of testing I've found that the error being related to addPage is almost completely incorrect.

This error happens when attempting to return a research to another tab during a reload if that tab has been removed.

In my case,
mods.thaumcraft.Research.moveResearch("ROD_ESS_clarissa2", "ELDRITCH", 8, 1); mods.thaumcraft.Research.removeTab("EXTRASCEPTERSTAFF");

This moves the research ROD_ESS_clarissa2 from EXTRASCEPTERSTAFF into ELDRITCH but is then unable to move it back during a reload, causing the internal error and memory leaking.

@AppleConnoiseur
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I can confirm that this issue happen to me as well. Got it when i tested out Agrarian Skies 2 in Multiplayer. It happens when i try to reconnect to a server, this time specifically my own.

Singleplayer it works fine though.

[12:13:32] [Client thread/ERROR] [FML/]: SimpleChannelHandlerWrapper exception
java.lang.NullPointerException
    at modtweaker2.mods.thaumcraft.research.AddPage.undo(AddPage.java:113) ~[AddPage.class:?]
    at minetweaker.runtime.MTTweaker.rollback(MTTweaker.java:83) ~[MTTweaker.class:?]
    at minetweaker.MineTweakerImplementationAPI.reload(MineTweakerImplementationAPI.java:589) ~[MineTweakerImplementationAPI.class:?]
    at minetweaker.mc1710.network.MineTweakerLoadScriptsHandler.onMessage(MineTweakerLoadScriptsHandler.java:28) ~[MineTweakerLoadScriptsHandler.class:?]
    at minetweaker.mc1710.network.MineTweakerLoadScriptsHandler.onMessage(MineTweakerLoadScriptsHandler.java:21) ~[MineTweakerLoadScriptsHandler.class:?]
    at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:37) ~[SimpleChannelHandlerWrapper.class:?]
    at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:17) ~[SimpleChannelHandlerWrapper.class:?]
    at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[SimpleChannelInboundHandler.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) [SimpleChannelInboundHandler.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) [SimpleChannelInboundHandler.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) [MessageToMessageDecoder.class:?]
    at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) [MessageToMessageCodec.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [DefaultChannelPipeline.class:?]
    at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) [EmbeddedChannel.class:?]
    at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?]
    at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?]
    at net.minecraft.client.multiplayer.PlayerControllerMP.func_78765_e(PlayerControllerMP.java:273) [bje.class:?]
    at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1590) [bao.class:?]
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:961) [bao.class:?]
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887) [bao.class:?]
    at net.minecraft.client.main.Main.main(SourceFile:148) [Main.class:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25]
    at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25]
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?]
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]
[12:13:32] [Client thread/ERROR] [FML/]: There was a critical exception handling a packet on channel MineTweaker3
java.lang.NullPointerException
    at modtweaker2.mods.thaumcraft.research.AddPage.undo(AddPage.java:113) ~[AddPage.class:?]
    at minetweaker.runtime.MTTweaker.rollback(MTTweaker.java:83) ~[MTTweaker.class:?]
    at minetweaker.MineTweakerImplementationAPI.reload(MineTweakerImplementationAPI.java:589) ~[MineTweakerImplementationAPI.class:?]
    at minetweaker.mc1710.network.MineTweakerLoadScriptsHandler.onMessage(MineTweakerLoadScriptsHandler.java:28) ~[MineTweakerLoadScriptsHandler.class:?]
    at minetweaker.mc1710.network.MineTweakerLoadScriptsHandler.onMessage(MineTweakerLoadScriptsHandler.java:21) ~[MineTweakerLoadScriptsHandler.class:?]
    at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:37) ~[SimpleChannelHandlerWrapper.class:?]
    at cpw.mods.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:17) ~[SimpleChannelHandlerWrapper.class:?]
    at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:98) ~[SimpleChannelInboundHandler.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
    at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) ~[SimpleChannelInboundHandler.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
    at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:101) ~[SimpleChannelInboundHandler.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
    at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103) ~[MessageToMessageDecoder.class:?]
    at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) ~[DefaultChannelPipeline.class:?]
    at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:169) ~[EmbeddedChannel.class:?]
    at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:77) [FMLProxyPacket.class:?]
    at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?]
    at net.minecraft.client.multiplayer.PlayerControllerMP.func_78765_e(PlayerControllerMP.java:273) [bje.class:?]
    at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1590) [bao.class:?]
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:961) [bao.class:?]
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887) [bao.class:?]
    at net.minecraft.client.main.Main.main(SourceFile:148) [Main.class:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25]
    at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25]
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?]
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]

@jaredlll08
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This is a minetweaker issue, as it reloads scripts when joining servers, and mods are NOT meant to be reloaded.

I know it is not ideal just to leave it like this. but I honestly can not do anything

@BTRBT
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BTRBT commented Oct 12, 2018

Was any progress ever made on this front? I noticed that you now manage craft-tweaker, and using the latest version, similar errors persist. Is there anything I can do in the construction of my scripts to avoid this problem from happening? Any source code tweaks I could perform which might reconcile the issue?

@jaredlll08
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Well scripts are no longer reloaded in 1.12, so this shouldn't be an issue, unless you're not using 1.12, in which case that is your issue.

@BTRBT
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BTRBT commented Oct 12, 2018

I'm using 1.7.10. Is it possible to disable script reloading on my end?

@jaredlll08
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jaredlll08 commented Oct 12, 2018 via email

@BTRBT
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BTRBT commented Oct 12, 2018

... Right. Well, thank you for your help anyway, I suppose. Sorry to have bothered you. Have a great day.

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@jaredlll08 @Yulife @AlfieSR @AppleConnoiseur @BTRBT