Question What's the problem with my mods server? This is the crash report:

---- Minecraft Crash Report ----

WARNING: coremods are present:
ForgelinPlugin (Forgelin_1.8.4.jar)
PhosphorFMLLoadingPlugin (phosphor-1.12.2-0.2.6+build50.jar)
OpenModsCorePlugin (OpenModsLib-1.12.2-0.12.2.jar)
EnderCorePlugin (EnderCore-1.12.2-0.5.72-core.jar)
Contact their authors BEFORE contacting forge

// Why is it breaking

Time: 11/30/19 1:38 PM
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: net/minecraft/client/entity/EntityPlayerSP
at mod.mcreator.mcreator_leave1.<clinit>(mcreator_leave1.java:67)
at mod.mcreator.odioitamod.<init>(odioitamod.java:73)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at net.minecraftforge.fml.common.ILanguageAdapter$JavaAdapter.getNewInstance(ILanguageAdapter.java:191)
at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:599)
at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
at com.google.common.eventbus.Subscriber$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$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
at com.google.common.eventbus.EventBus.post(EventBus.java:217)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:219)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:197)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
at com.google.common.eventbus.Subscriber$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$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
at com.google.common.eventbus.EventBus.post(EventBus.java:217)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:136)
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:593)
at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:98)
at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:333)
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:125)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.entity.EntityPlayerSP
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
... 39 more
Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer net.minecraftforge.fml.common.asm.transformers.SideTransformer@189b5fb1 from coremod FMLCorePlugin
at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:260)
at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
... 41 more
Caused by: java.lang.RuntimeException: Attempted to load class bud for invalid side SERVER
at net.minecraftforge.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:62)
at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:256)
... 43 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: Linux (amd64) version 3.10.0-957.21.3.el7.x86_64
Java Version: 1.8.0_232, Oracle Corporation
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1552820224 bytes (1480 MB) / 2147483648 bytes (2048 MB) up to 2147483648 bytes (2048 MB)
JVM Flags: 13 total; -Xmx2048M -XX:+UseContainerSupport -XX:+AlwaysPreTouch -XX:+DisableExplicitGC -XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=4M -XX:TargetSurvivorRatio=90 -XX:G1NewSizePercent=50 -XX:G1MaxNewSizePercent=80 -XX:InitiatingHeapOccupancyPercent=10 -XX:G1MixedGCLiveThresholdPercent=50
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.42 Powered by Forge 14.23.5.2838 64 mods loaded, 64 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 |
|:----- |:--------------------------------- |:----------------- |:----------------------------------------------- |:---------------------------------------- |
| LC | minecraft | 1.12.2 | minecraft.jar | None |
| LC | mcp | 9.42 | minecraft.jar | None |
| LC | FML | 8.0.99.99 | forge-1.12.2-14.23.5.2838-universal.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| LC | forge | 14.23.5.2838 | forge-1.12.2-14.23.5.2838-universal.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| LC | openmodscore | 0.12.2 | minecraft.jar | None |
| LC | securitycraft | v1.8.14 | [1.12.2]+SecurityCraft+v1.8.14.jar | None |
| LC | orbis-lib | 0.2.0 | orbis-lib-1.12.2-0.2.0+build121.jar | db341c083b1b8ce9160a769b569ef6737b3f4cdf |
| LC | aether | 0.2.5 | aether_ii-1.12.2-0.2.5+build121-universal.jar | db341c083b1b8ce9160a769b569ef6737b3f4cdf |
| LC | baubles | 1.5.2 | Baubles-1.12-1.5.2.jar | None |
| LC | bookshelf | 2.3.585 | Bookshelf-1.12.2-2.3.585.jar | d476d1b22b218a10d845928d1665d45fce301b27 |
| LC | jei | 4.15.0.268 | jei_1.12.2-4.15.0.268.jar | None |
| LC | botania | r1.10-362 | Botania+r1.10-362.jar | None |
| LC | forgelin | 1.8.4 | Forgelin_1.8.4.jar | None |
| LC | bountiful | 2.2.0 | Bountiful-2.2.0.jar | None |
| LC | codechickenlib | 3.2.2.353 | CodeChickenLib-1.12.2.jar | f1850c39b2516232a2108a7bd84d1cb5df93b261 |
| LC | cofhworld | 1.3.0 | CoFH-World-1.12.2.jar | 8a6abf2cb9e141b866580d369ba6548732eff25f |
| LC | redstoneflux | 2.1.0 | RedstoneFlux-1.12-2.1.0.6-universal.jar | 8a6abf2cb9e141b866580d369ba6548732eff25f |
| LC | cofhcore | 4.6.3 | CoFHCore-1.12.2-4.6.3.27-universal.jar | None |
| LC | modcurrency | 1.12-1.3.11 | Currency-1.12.0-1.3.11.jar | None |
| LC | eplus | 5.0.176 | EnchantingPlus-1.12.2-5.0.176.jar | d476d1b22b218a10d845928d1665d45fce301b27 |
| LC | endercore | 1.12.2-0.5.72 | EnderCore-1.12.2-0.5.72.jar | None |
| LC | thermalfoundation | 2.6.3 | ThermalFoundation-1.12.2-2.6.3.27-universal.jar | 8a6abf2cb9e141b866580d369ba6548732eff25f |
| LC | thermalexpansion | 5.5.4 | ThermalExpansion-1.12.2-5.5.4.43-universal.jar | 8a6abf2cb9e141b866580d369ba6548732eff25f |
| LC | enderio | 5.0.50 | EnderIO-1.12.2-5.0.50.jar | None |
| LC | enderiointegrationtic | 5.0.50 | EnderIO-1.12.2-5.0.50.jar | None |
| LC | enderiobase | 5.0.50 | EnderIO-1.12.2-5.0.50.jar | None |
| LC | enderioconduits | 5.0.50 | EnderIO-1.12.2-5.0.50.jar | None |
| LC | enderioconduitsappliedenergistics | 5.0.50 | EnderIO-1.12.2-5.0.50.jar | None |
| LC | enderioconduitsopencomputers | 5.0.50 | EnderIO-1.12.2-5.0.50.jar | None |
| LC | enderioconduitsrefinedstorage | 5.0.50 | EnderIO-1.12.2-5.0.50.jar | None |
| LC | enderiointegrationforestry | 5.0.50 | EnderIO-1.12.2-5.0.50.jar | None |
| LC | mantle | 1.12-1.3.3.55 | Mantle-1.12-1.3.3.55.jar | None |
| LC | tconstruct | 1.12.2-2.12.0.157 | TConstruct-1.12.2-2.12.0.157.jar | None |
| LC | enderiointegrationticlate | 5.0.50 | EnderIO-1.12.2-5.0.50.jar | None |
| LC | enderiomachines | 5.0.50 | EnderIO-1.12.2-5.0.50.jar | None |
| LC | enderiopowertools | 5.0.50 | EnderIO-1.12.2-5.0.50.jar | None |
| LC | golems | 7.1.7 | ExtraGolems-1.12-7.1.7.jar | None |
| LC | extrautils2 | 1.0 | extrautils2-1.12-1.9.9.jar | None |
| LC | faunaandecology | 0.1.2.7 | FE-1.12.2-0.1.2.8.jar | None |
| LC | ichunutil | 7.2.1 | iChunUtil-1.12.2-7.2.1.jar | 4db5c2bd1b556f252a5b8b54b256d381b2a0a6b8 |
| LC | ic2 | 2.8.171-ex112 | industrialcraft-2-2.8.171-ex112.jar | de041f9f6187debbc77034a344134053277aa3b0 |
| LC | ironchest | 1.12.2-7.0.67.844 | ironchest-1.12.2-7.0.72.847.jar | None |
| LC | ironfurnaces | 1.3.5 | ironfurnaces-1.3.5.jar | None |
| LC | justenoughbuttons | 1.12-1.2 | justenoughbuttons-1.12.2-1.2.3.jar | None |
| LC | mod_cobalt | 2.0.3.1 | mod_cobalt-2.0.3.1.jar | None |
| LC | patchouli | 1.0-20 | Patchouli-1.0-20.jar | None |
| LC | naturesaura | r18 | NaturesAura-r18.jar | None |
| LC | nei | 2.4.2 | NotEnoughItems-1.12.2-2.4.2.240-universal.jar | f1850c39b2516232a2108a7bd84d1cb5df93b261 |
| L | odioitamod | 1.4.2 | Odioita-mod-1.4.2.jar | None |
| L | openmods | 0.12.2 | OpenModsLib-1.12.2-0.12.2.jar | None |
| L | openblocks | 1.8.1 | OpenBlocks-1.12.2-1.8.1.jar | None |
| L | portalgun | 7.1.0 | PortalGun-1.12.2-7.1.0.jar | None |
| L | projecte | 1.12.2-PE1.4.1 | ProjectE-1.12.2-PE1.4.1.jar | None |
| L | roguelike | 1.8.0 | RoguelikeDungeons-1.12.2-1.8.0.jar | None |
| L | subcommonlib | 1.2.0.1 | subcommonlib-sublib-1.12.2-1.2.0.4.jar | None |
| L | tt | 1.12.2 | tacotuesday-1.12.2-2.0.13.jar | None |
| L | telepads | $version | telepads-1.12.2-1.1.0.7.jar | None |
| L | tinymobfarm | 1.0.5 | TinyMobFarm-1.12.2-1.0.5.jar | None |
| L | bspkrscore | at_0.9 | TreeCapitator-Mod-1.12.jar | None |
| L | treecapitator | at_0.9 | TreeCapitator-Mod-1.12.jar | None |
| L | uteamcore | 2.2.4.107 | u_team_core-1.12.2-2.2.4.107.jar | None |
| L | usefulbackpacks | 1.5.1.35 | useful_backpacks-1.12.2-1.5.1.35.jar | None |
| L | warpbook | @VERSION@ | Warpbook-1.12.2-3.2.0.jar | None |
| L | phosphor-lighting | 1.12.2-0.2.6 | phosphor-1.12.2-0.2.6+build50.jar | None |

Loaded coremods (and transformers):
ForgelinPlugin (Forgelin_1.8.4.jar)
PhosphorFMLLoadingPlugin (phosphor-1.12.2-0.2.6+build50.jar)
OpenModsCorePlugin (OpenModsLib-1.12.2-0.12.2.jar)
openmods.core.OpenModsClassTransformer
EnderCorePlugin (EnderCore-1.12.2-0.5.72-core.jar)
com.enderio.core.common.transform.EnderCoreTransformer
com.enderio.core.common.transform.SimpleMixinPatcher
OpenModsLib class transformers: [llama_null_fix:FINISHED],[horse_base_null_fix:FINISHED],[pre_world_render_hook:ENABLED],[player_render_hook:ENABLED],[horse_null_fix:FINISHED]
Pulsar/tconstruct loaded Pulses:
- TinkerCommons (Enabled/Forced)
- TinkerWorld (Enabled/Not Forced)
- TinkerTools (Enabled/Not Forced)
- TinkerHarvestTools (Enabled/Forced)
- TinkerMeleeWeapons (Enabled/Forced)
- TinkerRangedWeapons (Enabled/Forced)
- TinkerModifiers (Enabled/Forced)
- TinkerSmeltery (Enabled/Not Forced)
- TinkerGadgets (Enabled/Not Forced)
- TinkerOredict (Enabled/Forced)
- TinkerIntegration (Enabled/Forced)
- TinkerFluids (Enabled/Forced)
- TinkerMaterials (Enabled/Forced)
- TinkerModelRegister (Enabled/Forced)

Profiler Position: N/A (disabled)
Is Modded: Definitely; Server brand changed to 'fml,forge'
Type: Dedicated Server (map_server.txt)