Crash Report

---- Minecraft Crash Report ----

WARNING: coremods are present:
  SpongeCoremod (spongeforge-1.12.2-2838-7.1.7-RC3845.jar)
Contact their authors BEFORE contacting forge

// Daisy, daisy...

Time: 1/20/20 2:01 PM
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: net/minecraftforge/common/WorldWorkerManager
	at net.minecraftforge.common.ForgeInternalHandler.onServerTick(ForgeInternalHandler.java:90)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_23_ForgeInternalHandler_onServerTick_ServerTickEvent.invoke(.dynamic)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
	at net.minecraftforge.fml.common.eventhandler.EventBus.forgeBridge$post(EventBus.java:752)
	at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:702)
	at net.minecraftforge.fml.common.FMLCommonHandler.onPreServerTick(FMLCommonHandler.java:279)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:657)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: net.minecraftforge.common.WorldWorkerManager
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 9 more
Caused by: java.lang.SecurityException: class "net.minecraftforge.common.WorldWorkerManager"'s signer information does not match signer information of other classes in the same package
	at java.lang.ClassLoader.checkCerts(ClassLoader.java:898)
	at java.lang.ClassLoader.preDefineClass(ClassLoader.java:668)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:761)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
	... 11 more


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

-- Head --
Thread: Server thread
Stacktrace:
	at net.minecraftforge.common.ForgeInternalHandler.onServerTick(ForgeInternalHandler.java:90)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_23_ForgeInternalHandler_onServerTick_ServerTickEvent.invoke(.dynamic)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
	at net.minecraftforge.fml.common.eventhandler.EventBus.forgeBridge$post(EventBus.java:752)

-- Sponge PhaseTracker --
Details:
	Phase Stack: [Empty stack]
Stacktrace:
	at net.minecraft.server.MinecraftServer.handler$onCrashReport$zja000(MinecraftServer.java:5220)
	at net.minecraft.server.MinecraftServer.func_71230_b(MinecraftServer.java:889)
	at net.minecraft.server.dedicated.DedicatedServer.func_71230_b(DedicatedServer.java:371)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:558)
	at java.lang.Thread.run(Thread.java:748)

-- System Details --
Details:
	Minecraft Version: 1.12.2
	Operating System: Linux (amd64) version 4.9.185-xxxx-std-ipv6-64
	Java Version: 1.8.0_212, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 4706380736 bytes (4488 MB) / 12821987328 bytes (12228 MB) up to 12821987328 bytes (12228 MB)
	JVM Flags: 12 total; -Xmx12228M -Xms12228M -XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -XX:MaxGCPauseMillis=100 -XX:+DisableExplicitGC -XX:TargetSurvivorRatio=90 -XX:G1NewSizePercent=50 -XX:G1MaxNewSizePercent=80 -XX:G1MixedGCLiveThresholdPercent=35 -XX:+AlwaysPreTouch -XX:+ParallelRefProcEnabled
	IntCache: cache: 6, tcache: 0, allocated: 13, tallocated: 95
	FML: ~~ERROR~~ NoClassDefFoundError: net/minecraftforge/common/util/TextTable$1
	Loaded coremods (and transformers):
SpongeCoremod (spongeforge-1.12.2-2838-7.1.7-RC3845.jar)
  org.spongepowered.common.launch.transformer.SpongeSuperclassTransformer
	Profiler Position: N/A (disabled)
	Player Count: 0 / 144; []
	Is Modded: Definitely; Server brand changed to 'fml,forge,sponge'
	Type: Dedicated Server (map_server.txt)