Urgent Help Forge Is Crashing!!!

So I downloaded some mods for forge and when I tried to launch forge it opens up minecraft but when its rendering in the start screen, it just closes and in minecraft it says 

The game crashed whilst initializing game
Error: java.lang.NoClassDefFoundError: net/minecraft/client/renderer/entity/layers/LayerDeadmau5Head
Exit Code: -1

Please help Idk what to do. Here is the full crash report: 

---- Minecraft Crash Report ----

WARNING: coremods are present:
  MixinLoaderForge (salhack-github-2.05-release.jar)
  FMLLoadingPlugin (Keystrokes-8.0.2 (1.8.9).jar)
Contact their authors BEFORE contacting forge

// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 1/22/21 8:16 PM
Description: Initializing game

java.lang.NoClassDefFoundError: net/minecraft/client/renderer/entity/layers/LayerDeadmau5Head
    at net.minecraft.client.renderer.entity.RenderPlayer.<init>(RenderPlayer.java:45)
    at net.minecraft.client.renderer.entity.RenderPlayer.<init>(RenderPlayer.java:35)
    at net.minecraft.client.renderer.entity.RenderManager.<init>(RenderManager.java:227)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:518)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:378)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    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.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.renderer.entity.layers.LayerDeadmau5Head
    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)
    ... 12 more
Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer club.sk1er.mods.core.forge.ClassTransformer@6ac7f481 from coremod FMLLoadingPlugin
    at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:260)
    at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
    ... 14 more
Caused by: java.lang.NoClassDefFoundError: net/minecraft/util/IChatComponent
    at club.sk1er.mods.core.transform.Transformer.mapMethodName(Transformer.java:32)
    at club.sk1er.mods.core.transformers.LayerDeadmau5Transformer.transform(LayerDeadmau5Transformer.kt:13)
    at club.sk1er.mods.core.forge.ClassTransformer.transform(ClassTransformer.java:88)
    at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:256)
    ... 16 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.util.IChatComponent
    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)
    ... 20 more
Caused by: java.lang.NullPointerException

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

-- Head --
Thread: Client thread
Stacktrace:
    at net.minecraft.client.renderer.entity.RenderPlayer.<init>(RenderPlayer.java:45)
    at net.minecraft.client.renderer.entity.RenderPlayer.<init>(RenderPlayer.java:35)
    at net.minecraft.client.renderer.entity.RenderManager.<init>(RenderManager.java:227)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:518)

-- Initialization --
Details:
Stacktrace:
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:378)
    at net.minecraft.client.main.Main.main(SourceFile:123)
    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.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
    Minecraft Version: 1.12.2
    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: 330460808 bytes (315 MB) / 805306368 bytes (768 MB) up to 2147483648 bytes (2048 MB)
    JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP 9.42 Powered by Forge 14.23.5.2854 9 mods loaded, 9 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                                |
    |:----- |:------------- |:------------ |:-------------------------------- |:---------------------------------------- |
    | L     | minecraft     | 1.12.2       | minecraft.jar                    | None                                     |
    | L     | mcp           | 9.42         | minecraft.jar                    | None                                     |
    | L     | FML           | 8.0.99.99    | forge-1.12.2-14.23.5.2854.jar    | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | L     | forge         | 14.23.5.2854 | forge-1.12.2-14.23.5.2854.jar    | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | L     | modcore       | 0.1.47       | Sk1er Modcore-0.1.47 (1.8.9).jar | None                                     |
    | L     | keystrokesmod | 8.0.2        | Keystrokes-8.0.2 (1.8.9).jar     | None                                     |
    | L     | lunatriuscore | ${version}   | salhack-github-2.05-release.jar  | None                                     |
    | L     | schematica    | ${version}   | salhack-github-2.05-release.jar  | None                                     |
    | L     | salhack       | 2.05         | salhack-github-2.05-release.jar  | None                                     |

    Loaded coremods (and transformers): 
MixinLoaderForge (salhack-github-2.05-release.jar)
  
FMLLoadingPlugin (Keystrokes-8.0.2 (1.8.9).jar)
  club.sk1er.mods.core.forge.ClassTransformer
    GL info: ' Vendor: 'ATI Technologies Inc.' Version: '4.6.13560 Compatibility Profile Context 26.20.11030.22001' Renderer: 'AMD Radeon(TM) Vega 8 Graphics'
    Launched Version: 1.12.2-forge-14.23.5.2854
    LWJGL: 2.9.4
    OpenGL: AMD Radeon(TM) Vega 8 Graphics GL version 4.6.13560 Compatibility Profile Context 26.20.11030.22001, ATI Technologies Inc.
    GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

    Using VBOs: Yes
    Is Modded: Definitely; Client brand changed to 'fml,forge'
    Type: Client (map_client.txt)
    Resource Packs: 
    Current Language: English (US)
    Profiler Position: N/A (disabled)
    CPU: 8x AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx