Modpack troubleshooting

[JuninoCZ]

---- Minecraft Crash Report ----

WARNING: coremods are present:
  BCModPlugin (Backpacks 1.12 - 3.1.9.jar)
  Inventory Tweaks Coremod (InventoryTweaks-1.62.jar)
Contact their authors BEFORE contacting forge

// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 7/11/17 5:49 PM
Description: There was a severe problem during mod loading that has caused the game to fail

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Iron Chest (ironchest)
Caused by: java.lang.NoClassDefFoundError: net/minecraftforge/fml/common/event/FMLMissingMappingsEvent
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
    at java.lang.Class.getDeclaredMethods(Unknown Source)
    at net.minecraftforge.fml.common.FMLModContainer.gatherAnnotations(FMLModContainer.java:403)
    at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:598)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
    at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
    at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
    at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:252)
    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:230)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
    at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
    at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
    at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:147)
    at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:570)
    at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:227)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:466)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.ClassNotFoundException: net.minecraftforge.fml.common.event.FMLMissingMappingsEvent
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 41 more
Caused by: java.lang.NullPointerException

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
    Minecraft Version: 1.12
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_131, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 1795371120 bytes (1712 MB) / 2060976128 bytes (1965 MB) up to 2060976128 bytes (1965 MB)
    LiteLoader Brand: LiteLoader startup failed
    LiteLoader Mods: LiteLoader startup failed
    LaunchWrapper: 27 active transformer(s)
          - Transformer: net.minecraftforge.fml.common.asm.transformers.PatchingTransformer
          - Transformer: optifine.OptiFineClassTransformer
          - Transformer: $wrapper.net.minecraftforge.fml.common.asm.transformers.BlamingTransformer
          - Transformer: $wrapper.net.minecraftforge.fml.common.asm.transformers.SideTransformer
          - Transformer: $wrapper.net.minecraftforge.fml.common.asm.transformers.EventSubscriptionTransformer
          - Transformer: $wrapper.net.minecraftforge.fml.common.asm.transformers.EventSubscriberTransformer
          - Transformer: $wrapper.brad16840.common.asm.ClassTransformer
          - Transformer: org.spongepowered.asm.mixin.transformer.MixinTransformer$Proxy
          - Transformer: com.mumfrey.liteloader.transformers.event.EventProxyTransformer
          - Transformer: com.mumfrey.liteloader.launch.LiteLoaderTransformer
          - Transformer: com.mumfrey.liteloader.client.transformers.CrashReportTransformer
          - Transformer: net.minecraftforge.fml.common.asm.transformers.DeobfuscationTransformer
          - Transformer: net.minecraftforge.fml.common.asm.transformers.AccessTransformer
          - Transformer: invtweaks.forge.asm.ITAccessTransformer
          - Transformer: net.minecraftforge.fml.common.asm.transformers.ModAccessTransformer
          - Transformer: net.minecraftforge.fml.common.asm.transformers.ItemStackTransformer
          - Transformer: net.minecraftforge.fml.common.asm.transformers.ItemBlockTransformer
          - Transformer: net.minecraftforge.fml.common.asm.transformers.ItemBlockSpecialTransformer
          - Transformer: $wrapper.invtweaks.forge.asm.ContainerTransformer
          - Transformer: net.minecraftforge.fml.common.asm.transformers.TerminalTransformer
          - Transformer: org.spongepowered.asm.mixin.transformer.MixinTransformer$Proxy
          - Transformer: com.mumfrey.liteloader.transformers.event.EventTransformer
          - Transformer: com.mumfrey.liteloader.common.transformers.LiteLoaderPacketTransformer
          - Transformer: com.mumfrey.liteloader.client.transformers.MinecraftTransformer
          - Transformer: com.mumfrey.liteloader.transformers.event.json.ModEventInjectionTransformer
          - Transformer: org.spongepowered.asm.mixin.transformer.MixinTransformer$Proxy
          - Transformer: net.minecraftforge.fml.common.asm.transformers.ModAPITransformer
    JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xms2048m -Xmx2048m
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP 9.40 Powered by Forge 14.21.1.2389 Optifine OptiFine_1.12_HD_U_C4 19 mods loaded, 19 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
    UC    minecraft{1.12} [Minecraft] (minecraft.jar) 
    UC    mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
    UC    FML{8.0.99.99} [Forge Mod Loader] (modpack.jar) 
    UC    forge{14.21.1.2389} [Minecraft Forge] (modpack.jar) 
    UC    backpacks16840{3.1.9} [Backpacks!] (Backpacks 1.12 - 3.1.9.jar) 
    UC    bibliocraft{2.4.2} [BiblioCraft] (BiblioCraft[v2.4.2][MC1.12.0].jar) 
    UC    quickleafdecay{1.2.3} [Quick Leaf Decay] (FastLeafDecay-Mod-1.12.jar) 
    UC    gravestone{1.8.4} [Gravestone Mod] (gravestone-1.8.4.jar) 
    UC    inventorytweaks{1.62+release.90.40cf8fc} [Inventory Tweaks] (InventoryTweaks-1.62.jar) 
    UE    ironchest{1.12-7.0.27.813} [Iron Chest] (ironchest-1.12-7.0.27.813.jar) 
    UC    jei{4.7.1.69} [Just Enough Items] (jei_1.12-4.7.1.69.jar) 
    UC    llor{1.1.4-mc1.12} [Light Level Overlay Reloaded] (LLOverlayReloaded-1.1.4-mc1.12.jar) 
    UC    torohealthmod{1.12-11} [ToroHealth Damage Indicators] (torohealth-1.12-11.jar) 
    UC    traverse{1.2.0} [Traverse] (Traverse-1.12-1.2.0-19.jar) 
    UC    bspkrscore{at_0.9} [bspkrsCore] (Treecapitator-1.12-at_0.9.jar) 
    UC    treecapitator{at_0.9} [Treecapitator] (Treecapitator-1.12-at_0.9.jar) 
    UC    witherskelefix{1.7.0} [Wither Skeleton Tweaks] (Wither Skeleton Tweaks-1.12-2.0.0.jar) 
    UC    xaerominimap{1.13.1} [Xaero's Minimap] (Xaeros_Minimap_1.13.1_Forge_1.12.jar) 
    UC    xaeroworldmap{1.9} [Xaero's World Map] (XaerosWorldMap_b1.9_Forge_1.12.jar) 
    Loaded coremods (and transformers): 
BCModPlugin (Backpacks 1.12 - 3.1.9.jar)
  brad16840.common.asm.ClassTransformer
Inventory Tweaks Coremod (InventoryTweaks-1.62.jar)
  invtweaks.forge.asm.ContainerTransformer
    GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.5.0 NVIDIA 369.09' Renderer: 'GeForce GT 630/PCIe/SSE2'
    OptiFine Version: OptiFine_1.12_HD_U_C4
    Render Distance Chunks: 8
    Mipmaps: 4
    Anisotropic Filtering: 1
    Antialiasing: 0
    Multitexture: false
    Shaders: null
    OpenGlVersion: 4.5.0 NVIDIA 369.09
    OpenGlRenderer: GeForce GT 630/PCIe/SSE2
    OpenGlVendor: NVIDIA Corporation
    CpuCount: 8

crash-2017-07-11_17.49.58-client.txt