---- Minecraft Crash Report ----
// Shall we play a game?

Time: 1/21/20 8:46 AM
Description: Initializing game

java.lang.NoClassDefFoundError: net/minecraft/fluid/Fluid
	at net.minecraft.util.registry.Registry.<clinit>(SourceFile:79)
	at net.minecraft.util.registry.Bootstrap.func_151354_b(SourceFile:38)
	at net.minecraft.client.Minecraft.<init>(Minecraft.java:352)
	at net.minecraft.client.main.Main.main(SourceFile:164)
	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:497)
	at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56)
	at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$383/145066402.call(Unknown Source)
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37)
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54)
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72)
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:81)
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:65)
Caused by: java.lang.ClassNotFoundException: net.minecraft.fluid.Fluid
	at java.lang.ClassLoader.findClass(ClassLoader.java:530)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:101)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 15 more


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

-- Head --
Thread: Render thread
Stacktrace:
	at net.minecraft.util.registry.Registry.<clinit>(SourceFile:79)
	at net.minecraft.util.registry.Bootstrap.func_151354_b(SourceFile:38)
	at net.minecraft.client.Minecraft.<init>(Minecraft.java:352)

-- Initialization --
Details:
Stacktrace:
	at net.minecraft.client.main.Main.main(SourceFile:164)
	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:497)
	at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56)
	at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$383/145066402.call(Unknown Source)
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37)
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54)
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72)
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:81)
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:65)

-- System Details --
Details:
	Minecraft Version: 1.15.1
	Minecraft Version ID: 0f97d3f13a6a49d6bb96bb3fbc6729fb
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 855974336 bytes (816 MB) / 1073741824 bytes (1024 MB) up to 8589934592 bytes (8192 MB)
	CPUs: 8
	JVM Flags: 11 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx8192m -Xms256m -XX:PermSize=256m -XX:+UseG1GC -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	Launched Version: forge-30.0.42
	Backend library: LWJGL version 3.2.2 build 10
	Backend API: NO CONTEXT
	GL Caps:
	Using VBOs: Yes
	Is Modded: Very likely; Jar signature invalidated
	Type: Client (map_client.txt)
	CPU: <unknown>