Minecraft server forge crash

So i was trying to make a server for me and my friend to play on but when running the forge for it the crash report came out with:

---- Minecraft Crash Report ----

WARNING: coremods are present:
  PokeradarLoadingPlugin (pokeradar-1-12-2-4.2.0.jar)
  CXLibraryCore (CXLibrary-1.12.1.jar)
Contact their authors BEFORE contacting forge

// Uh... Did I do that?

Time: 08/06/19 23:28
Description: Exception in server tick loop

net.minecraftforge.fml.common.LoaderException: java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient
    at net.minecraftforge.fml.common.AutomaticEventSubscriber.inject(AutomaticEventSubscriber.java:89)
    at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:599)
    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$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:218)
    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:196)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$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$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:135)
    at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:593)
    at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:98)
    at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:333)
    at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:125)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
    at java.lang.Class.privateGetPublicMethods(Unknown Source)
    at java.lang.Class.getMethods(Unknown Source)
    at net.minecraftforge.fml.common.eventhandler.EventBus.register(EventBus.java:82)
    at net.minecraftforge.fml.common.AutomaticEventSubscriber.inject(AutomaticEventSubscriber.java:82)
    ... 32 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.multiplayer.WorldClient
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 38 more
Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer net.minecraftforge.fml.common.asm.transformers.SideTransformer@7a26928a from coremod FMLCorePlugin
    at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:260)
    at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
    ... 40 more
Caused by: java.lang.RuntimeException: Attempted to load class bsb for invalid side SERVER
    at net.minecraftforge.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:62)
    at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:256)
    ... 42 more

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

-- System Details --
Details:
    Minecraft Version: 1.12.2
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_181, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 582442960 bytes (555 MB) / 811597824 bytes (774 MB) up to 1900019712 bytes (1812 MB)
    JVM Flags: 0 total; 
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP 9.42 Powered by Forge 14.23.5.2770 20 mods loaded, 20 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

    | State | ID                   | Version           | Source                                         | Signature                                |
    |:----- |:-------------------- |:----------------- |:---------------------------------------------- |:---------------------------------------- |
    | UC    | minecraft            | 1.12.2            | minecraft.jar                                  | None                                     |
    | UC    | mcp                  | 9.42              | minecraft.jar                                  | None                                     |
    | UC    | FML                  | 8.0.99.99         | forge-1.12.2-14.23.5.2770-universal.jar        | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UC    | forge                | 14.23.5.2770      | forge-1.12.2-14.23.5.2770-universal.jar        | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UC    | cxlibrary            | 1.6.1             | CXLibrary-1.12.1.jar                           | None                                     |
    | UC    | ichunutil            | 7.2.0             | iChunUtil-1.12.2-7.2.0.jar                     | 4db5c2bd1b556f252a5b8b54b256d381b2a0a6b8 |
    | UE    | imsm                 | 1.12              | Instant-Massive-Structures-Mod-1.12.jar        | None                                     |
    | U     | ironchest            | 1.12.2-7.0.59.842 | Iron-Chests-Mod-1.12.2.jar                     | None                                     |
    | U     | jei                  | 4.15.0.269        | jei_1.12.2-4.15.0.269.jar                      | None                                     |
    | U     | lucky                | 7.5.0             | LuckyBlock-1.12.jar                            | None                                     |
    | U     | morefurnaces         | 1.10.1            | More-Furnaces-Mod-1.12.1.jar                   | None                                     |
    | U     | cfm                  | 4.1.5             | MrCrayfishs-Furniture-Mod-1.12.1.jar           | None                                     |
    | U     | pixelmon             | 2.6.2             | PixelmonGenerations-1.12.2-2.6.2-universal.jar | None                                     |
    | U     | prefab               | 1.3.0.25          | Prefab-Mod-1.12.2.jar                          | None                                     |
    | U     | zevac.survivalflight | 0.1.11            | Survival-Flight-Mod-1.12.2.jar                 | None                                     |
    | U     | bspkrscore           | at_0.9            | TreeCapitator-Mod-1.12.jar                     | None                                     |
    | U     | treecapitator        | at_0.9            | TreeCapitator-Mod-1.12.jar                     | None                                     |
    | U     | uncraftingtable      | 1.8-beta6         | Uncrafting-Table-Mod-1.12.1.jar                | None                                     |
    | U     | veinminer            | 0.38.2            | VeinMiner-1.12-0.38.2.647+b31535a.jar          | None                                     |
    | U     | veinminermodsupport  | 0.38.2            | VeinMiner-1.12-0.38.2.647+b31535a.jar          | None                                     |

    Loaded coremods (and transformers): 
PokeradarLoadingPlugin (pokeradar-1-12-2-4.2.0.jar)
  pokeradar.asm.AllowedCharactersTransformer
  pokeradar.asm.UnlimitedCharactersTransformer
  pokeradar.asm.SimpleWrapperTransformer
CXLibraryCore (CXLibrary-1.12.1.jar)
  cubex2.cxlibrary.CoreModTransformer
    Profiler Position: N/A (disabled)
    Is Modded: Definitely; Server brand changed to 'fml,forge'
    Type: Dedicated Server (map_server.txt)

Can anyone help? I'm very new to this