Hello, my Forge Server Crashing when player joins. Here's a crashreport: 

Quote

 

---- Minecraft Crash Report ----
// Ouch. That hurt

Time: 11/20/17 3:56 PM
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft
    at com.mrcrayfish.furniture.proxy.CommonProxy.isDedicatedServer(CommonProxy.java:50)
    at com.mrcrayfish.furniture.handler.SyncEvent.onPlayerLogin(SyncEvent.java:33)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_42_SyncEvent_onPlayerLogin_PlayerLoggedInEvent.invoke(.dynamic)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
    at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:185)
    at net.minecraftforge.fml.common.FMLCommonHandler.firePlayerLoggedIn(FMLCommonHandler.java:565)
    at net.minecraft.server.management.PlayerList.initializeConnectionToPlayer(PlayerList.java:228)
    at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.completeServerSideConnection(NetworkDispatcher.java:260)
    at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.access$100(NetworkDispatcher.java:73)
    at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher$1.func_73660_a(NetworkDispatcher.java:209)
    at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:287)
    at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:180)
    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:732)
    at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:387)
    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.Minecraft
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 17 more
Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer net.minecraftforge.fml.common.asm.transformers.SideTransformer@6aa3a905 from coremod FMLCorePlugin
    at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:253)
    at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
    ... 19 more
Caused by: java.lang.RuntimeException: Attempted to load class bcx for invalid side SERVER
    at net.minecraftforge.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:56)
    at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:249)
    ... 21 more

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

-- System Details --
Details:
    Minecraft Version: 1.10.2
    Operating System: Windows 7 (amd64) version 6.1
    Java Version: 1.8.0_151, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 4994717472 bytes (4763 MB) / 6029312000 bytes (5750 MB) up to 6029312000 bytes (5750 MB)
    JVM Flags: 2 total; -Xms6000M -Xmx6000M
    IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 104
    FML: MCP 9.32 Powered by Forge 12.18.3.2185 15 mods loaded, 15 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
    UCHIJAAAA    mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
    UCHIJAAAA    FML{8.0.99.99} [Forge Mod Loader] (forge.jar) 
    UCHIJAAAA    Forge{12.18.3.2185} [Minecraft Forge] (forge.jar) 
    UCHIJAAAA    battletowers{1.5.8} [Battle Towers] (BattleTowers-1.10.2.jar) 
    UCHIJAAAA    mujmajnkraftsbettersurvival{1.0.1} [Better Survival] (bettersurvival-1.0.jar) 
    UCHIJAAAA    BiomesOPlenty{5.0.0.2290} [Biomes O' Plenty] (BiomesOPlenty-1.10.2-5.0.0.2290-universal.jar) 
    UCHIJAAAA    cfm{4.1} [MrCrayfish's Furniture Mod] (cfm-4.1.1-mc1.10.2.jar) 
    UCHIJAAAA    cmotd{1.0.5} [p455w0rd MOTD Customizer] (CustomMOTD-1.9.4-1.0.5.jar) 
    UCHIJAAAA    cyclopscore{0.10.7} [Cyclops Core] (CyclopsCore-1.9.4-0.10.7.jar) 
    UCHIJAAAA    mocreatures{10.0.6} [DrZhark's Mo'Creatures Mod] (DrZhark's Mo'Creatures Mod-10.0.6.jar) 
    UCHIJAAAA    evilcraft{0.10.29} [EvilCraft] (EvilCraft-1.10.2-0.10.29.jar) 
    UCHIJAAAA    ironchest{1.10.2-7.0.12.801} [Iron Chest] (ironchest-1.10.2-7.0.12.801.jar) 
    UCHIJAAAA    harvestcraft{1.10.2j} [Pam's HarvestCraft] (Pam's HarvestCraft 1.10.2j.jar) 
    UCHIJAAAA    thinkbigcore{1.5.8} [§5§m===§r §e§lThink Big Core §5§m===§r] (Think Big Core V1.5.8 - 1.10.2.jar) 
    UCHIJAAAA    potatians{1.5.5} [§6(§m===§6) §e§lPotatians §6(§m===§6)] (Potatians V1.5.5 - 1.10.2.jar) 
    Loaded coremods (and transformers): 
    Profiler Position: N/A (disabled)
    Player Count: 1 / 20; [EntityPlayerMP['Lel_Khaos'/218, l='world', x=-114.50, y=62.00, z=290.50]]
    Is Modded: Definitely; Server brand changed to 'fml,forge'
    Type: Dedicated Server (map_server.txt)

 

 

Edited November 20, 20177 yr by Lel_Khaos

Thanks it worked!