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Hey, so im trying to create a server to play a mod pack with my friends. When I launch up the modded server using minecraftforge-universal, it crashes and creates a crash report. Ive put a copy of it further down. Does anybody know the problem, and a solution? Thanks for helping

---- Minecraft Crash Report -------- Minecraft Crash Report ----// Ouch. That hurt
Time: 08/01/18 8:16 PMDescription: Exception in server tick loop
java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Unknown Source) at java.lang.Class.getDeclaredMethods(Unknown Source) at cpw.mods.fml.common.FMLModContainer.gatherAnnotations(FMLModContainer.java:328) at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:517) at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74) at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45) at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313) at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296) at com.google.common.eventbus.EventBus.post(EventBus.java:267) at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:201) at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:181) 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.EventHandler.handleEvent(EventHandler.java:74) at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45) at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313) at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296) at com.google.common.eventbus.EventBus.post(EventBus.java:267) at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:112) at cpw.mods.fml.common.Loader.loadMods(Loader.java:511) at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:99) at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:350) at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:69) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445) at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)Caused by: java.lang.ClassNotFoundException: net.minecraft.client.Minecraft at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:186) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 31 moreCaused by: java.lang.RuntimeException: Attempted to load class atv for invalid side SERVER at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:50) at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:274) at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:172) ... 33 more

A detailed walkthrough of the error, its code path and all known details is as follows:---------------------------------------------------------------------------------------
-- System Details --Details: Minecraft Version: 1.6.4 Operating System: Windows 8.1 (amd64) version 6.3 Java Version: 1.8.0_45, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 273116248 bytes (260 MB) / 444596224 bytes (424 MB) up to 1877475328 bytes (1790 MB) JVM Flags: 0 total; AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used Suspicious classes: FML and Forge are installed IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 FML: MCP v8.11 FML v6.4.50.1,345 Minecraft Forge 9.11.1.1345 77 mods loaded, 77 mods active mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed FML{6.4.50.1,345} [Forge Mod Loader] (minecraftforge-universal-1.6.4-9.11.1.1345.jar) Unloaded->Constructed Forge{9.11.1.1345} [Minecraft Forge] (minecraftforge-universal-1.6.4-9.11.1.1345.jar) Unloaded->Constructed CodeChickenCore{0.9.0.6} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed ImmibisMicroblocks{57.3.2} [Immibis's Microblocks] (immibis-microblocks-57.3.2.jar) Unloaded->Constructed Micdoodlecore{} [Micdoodle8 Core] (minecraft.jar) Unloaded->Constructed NotEnoughItems{1.6.1.5} [Not Enough Items] (NotEnoughItems 1.6.1.5.jar) Unloaded->Constructed PowerCrystalsCore{1.1.8} [PowerCrystals Core] (PowerCrystals-Core-1.6.4.jar) Unloaded->Constructed shadersmod{2.0.1 beta 18} [GLSL Shaders Mod] (minecraft.jar) Unloaded->Constructed TConstruct-Preloader{0.0.1} [Tinkers Corestruct] (minecraft.jar) Unloaded->Constructed ChickenShed{1.1.2} [Chicken Shed] ([1.6.4+] ChickenShed (v1.1.2).zip) Unloaded->Constructed bspkrsCore{v5.0(1.6.4)} [bspkrsCore] ([1.6.4]bspkrsCorev5.0.zip) Unloaded->Constructed mod_bspkrsCore{v5.0(1.6.4)} [bspkrsCore] ([1.6.4]bspkrsCorev5.0.zip) Unloaded->Constructed TreeCapitator{Forge 1.6.4.r06} [Treecapitator] ([1.6.4]TreeCapitator.Forge.1.6.4.r06.Universal.jar) Unloaded->Constructed cfm{3.2.6} [§4MrCrayfish's Furniture Mod] ([Forge]FurnitureModv3.2.6(1.6.4).zip) Unloaded->Constructed ArchimedesShipsMod{1.6.2 v1.4.4} [Archimedes' Ships] (Archimedes-Ships-Mod-1.6.4.zip) Unloaded->Constructed Artifice{1.6.4R1.1.3} [Artifice] (Artifice-1.1.3-195.jar) Unloaded->Constructed ArtificeCompat|Chisel{1.6.4R1.1.3} [Artifice Compat: Chisel] (Artifice-1.1.3-195.jar) Unloaded->Constructed ArtificeCompat|EE3{1.6.4R1.1.3} [Artifice Compat: EE3] (Artifice-1.1.3-195.jar) Unloaded->Constructed BiomesOPlenty{1.1.2} [Biomes O' Plenty] (BiomesOPlenty-universal-1.6.4-1.1.2.51.jar) Unloaded->Constructed IC2{2.0.336-experimental} [IndustrialCraft 2] (industrialcraft-2_2.0.336-experimental.jar) Unloaded->Constructed BuildCraft|Core{4.2.1} [BuildCraft] (buildcraft-A-1.6.4-4.2.1.jar) Unloaded->Constructed Forestry{2.3.0.7} [Forestry for Minecraft] (forestry-A-2.3.0.7.jar) Unloaded->Constructed ArtificeCompat|Forestry{1.6.4R1.1.3} [Artifice Compat: Forestry] (Artifice-1.1.3-195.jar) Unloaded->Constructed ArtificeCompat|MFR{1.6.4R1.1.3} [Artifice Compat: MFR] (Artifice-1.1.3-195.jar) Unloaded->Constructed ArtificeCompat|Railcraft{1.6.4R1.1.3} [Artifice Compat: Railcraft] (Artifice-1.1.3-195.jar) Unloaded->Constructed ArtificeCompat|Vanilla{1.6.4R1.1.3} [Artifice Compat: Vanilla] (Artifice-1.1.3-195.jar) Unloaded->Constructed AtomicScience{1.0.0} [Atomic Science] (Atomic_Science_v1.0.0.160.jar) Unloaded->Constructed BuildCraft|Builders{4.2.1} [BC Builders] (buildcraft-A-1.6.4-4.2.1.jar) Unloaded->Constructed BuildCraft|Energy{4.2.1} [BC Energy] (buildcraft-A-1.6.4-4.2.1.jar) Unloaded->Constructed BuildCraft|Factory{4.2.1} [BC Factory] (buildcraft-A-1.6.4-4.2.1.jar) Unloaded->Constructed BuildCraft|Transport{4.2.1} [BC Transport] (buildcraft-A-1.6.4-4.2.1.jar) Unloaded->Constructed BuildCraft|Silicon{4.2.1} [BC Silicon] (buildcraft-A-1.6.4-4.2.1.jar) Unloaded->Constructed BCTools{1.4-a-9} [Buildcraft Tools] (bcTools-v1.4-a-9.jar) Unloaded->Constructed BiblioCraft{1.5.3} [BiblioCraft] (BiblioCraft[v1.5.3].zip) Unloaded->Constructed chococraft{3.0.3} [Torojima's ChocoCraft] (Chococraft_3.0.3.zip) Unloaded->Constructed CompactSolars{4.4.14.183} [Compact Solar Arrays] (CompactSolars-Addon-1.6.4.zip) Unloaded->Constructed CowboyHat{1.0} [Cowboy Hat] (Cowboy-Hat-Mod-1.0.zip) Unloaded->Constructed customrecipes{4.52} [Custom Recipes] (CustomRecipes-4.5-5.jar) Unloaded->Constructed DamageIndicatorsMod{2.9.0.9} [Damage Indicators] (Damage-Indicators-Mod-1.6.4.zip) Unloaded->Constructed ImmibisCore{57.1.7} [Immibis Core] (immibis-core-57.1.7.jar) Unloaded->Constructed DimensionalAnchors{57.1.7} [Dimensional Anchors] (dimensional-anchor-57.1.7.jar) Unloaded->Constructed DynamicLights{1.2.7} [Dynamic Lights] (DynamicLights_1.6.4.jar) Unloaded DynamicLights_onFire{1.0.2} [Dynamic Lights on burning] (DynamicLights_1.6.4.jar) Unloaded DynamicLights_creepers{1.0.2} [Dynamic Lights on Creepers] (DynamicLights_1.6.4.jar) Unloaded DynamicLights_dropItems{1.0.4} [Dynamic Lights on ItemEntities] (DynamicLights_1.6.4.jar) Unloaded DynamicLights_mobEquipment{1.0.2} [Dynamic Lights on Mob Equipment] (DynamicLights_1.6.4.jar) Unloaded DynamicLights_flameArrows{1.0.0} [Dynamic Lights on Flame enchanted Arrows] (DynamicLights_1.6.4.jar) Unloaded DynamicLights_otherPlayers{1.0.4} [Dynamic Lights Other Player Light] (DynamicLights_1.6.4.jar) Unloaded DynamicLights_thePlayer{1.0.8} [Dynamic Lights Player Light] (DynamicLights_1.6.4.jar) Unloaded eplus{1.16.5b} [Enchanting Plus] (EnchantingPlus-1.16.5.zip) Unloaded EnderStorage{1.4.3.5} [EnderStorage] (EnderStorage 1.4.3.5.jar) Unloaded NBTEdit{1.6.4.0} [In-game NBTEdit] (Forge_NBTEditv1.6.4.0.zip) Unloaded ICBM|Sentry{1.3.4} [ICBM|Sentry] (ICBM_Sentry_v1.3.4.285.jar) Unloaded ICBM|Explosion{1.3.4} [ICBM|Explosion] (ICBM_Explosion_v1.3.4.285.jar) Unloaded GalacticraftCore{2.0.8} [Galacticraft Core] (Galacticraft-1.6.4-2.0.8.908.jar) Unloaded GalacticraftMars{2.0.8} [Galacticraft Mars] (Galacticraft-Planets-1.6.4-2.0.8.908.jar) Unloaded Hats{2.0.2} [Hats] (Hats2.0.2.zip) Unloaded HatStand{2.0.0} [HatStand] (HatStand2.0.0.zip) Unloaded ICBM|Contraption{1.3.4} [ICBM|Contraption] (ICBM_Contraption_v1.3.4.285.jar) Unloaded iChunUtil{2.3.0} [iChunUtil] (iChunUtil2.3.0.zip) Unloaded inventorytweaks{1.57-dev} [Inventory Tweaks] (InventoryTweaks-MC1.6.4-1.57-dev-b83.jar) Unloaded IronChest{5.4.1.614} [Iron Chest] (Iron-Chests-Mod-1.6.4.zip) Unloaded Mekanism{5.6.0} [Mekanism] (Mekanism-v5.6.0.622.jar) Unloaded MekanismGenerators{5.6.0} [MekanismGenerators] (MekanismGenerators-v5.6.0.622.jar) Unloaded MekanismInduction{5.6.0} [MekanismInduction] (MekanismInduction-v5.6.0.622.jar) Unloaded MekanismTools{5.6.0} [MekanismTools] (MekanismTools-v5.6.0.622.jar) Unloaded NetherOres{1.6.2R2.2.0} [Nether Ores] (Nether-Ores-Mod-1.6.4.jar) Unloaded PortalGun{2.0.1} [PortalGun] (PortalGun2.0.1.zip) Unloaded RedLogic{57.2.8} [RedLogic] (redlogic-57.2.8.jar) Unloaded mod_ReiMinimap{Not available} [mod_ReiMinimap] (Reis-Minimap-1.6.4.zip) Unloaded SGCraft{0.7.2} [SG Craft] (SGCraft-0.7.2-mc1.6.4.jar) Unloaded TConstruct{1.6.X_1.5.2.1} [Tinkers' Construct] (TConstruct_mc1.6.4_1.5.2.4.jar) Unloaded TF2Dispenser{1.6.4} [TF2 Dispenser] (TF2_Dispenser_1.6.4a.zip) Unloaded TF2Sentry{1.6.4} [TF2 Sentry] (TF2_Sentry_1.6.4a.zip) Unloaded TF2Teleporter{1.6.4} [TF2 Teleporter] (TF2_Teleporter_1.6.4a.zip) Unloaded Tubestuff{57.1.1} [Tubestuff] (tubestuff-57.1.1.jar) Unloaded Profiler Position: N/A (disabled) Is Modded: Definitely; Server brand changed to 'fml,forge' Type: Dedicated Server (map_server.txt)