Spoiler

---- Minecraft Crash Report ----

WARNING: coremods are present:
  FMLLoadingPlugin (AutoGG-4.0.3 (1.8.9).jar)
  LoadingPlugin (replaymod-1.8.9-2.5.2.jar)
  FMLLoadingPlugin (Keystrokes-8.0.2 (1.8.9).jar)
Contact their authors BEFORE contacting forge

// I let you down. Sorry

Time: 7/26/21 11:53 AM
Description: Initializing game

java.lang.NullPointerException: Initializing game
    at net.minecraftforge.fml.common.Loader$ModIdComparator.compare(Loader.java:375)
    at net.minecraftforge.fml.common.Loader$ModIdComparator.compare(Loader.java:370)
    at java.util.TreeMap.getEntryUsingComparator(TreeMap.java:376)
    at java.util.TreeMap.getEntry(TreeMap.java:345)
    at java.util.TreeMap.get(TreeMap.java:278)
    at com.google.common.collect.AbstractMapBasedMultimap.put(AbstractMapBasedMultimap.java:192)
    at com.google.common.collect.AbstractSetMultimap.put(AbstractSetMultimap.java:121)
    at com.google.common.collect.TreeMultimap.put(TreeMultimap.java:78)
    at net.minecraftforge.fml.common.Loader.identifyDuplicates(Loader.java:386)
    at net.minecraftforge.fml.common.Loader.identifyMods(Loader.java:364)
    at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:488)
    at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:208)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:417)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
    at net.minecraft.client.main.Main.main(SourceFile:124)
    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)

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

-- Head --
Stacktrace:
    at net.minecraftforge.fml.common.Loader$ModIdComparator.compare(Loader.java:375)
    at net.minecraftforge.fml.common.Loader$ModIdComparator.compare(Loader.java:370)
    at java.util.TreeMap.getEntryUsingComparator(TreeMap.java:376)
    at java.util.TreeMap.getEntry(TreeMap.java:345)
    at java.util.TreeMap.get(TreeMap.java:278)
    at com.google.common.collect.AbstractMapBasedMultimap.put(AbstractMapBasedMultimap.java:192)
    at com.google.common.collect.AbstractSetMultimap.put(AbstractSetMultimap.java:121)
    at com.google.common.collect.TreeMultimap.put(TreeMultimap.java:78)
    at net.minecraftforge.fml.common.Loader.identifyDuplicates(Loader.java:386)
    at net.minecraftforge.fml.common.Loader.identifyMods(Loader.java:364)
    at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:488)
    at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:208)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:417)

-- Initialization --
Details:
Stacktrace:
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
    at net.minecraft.client.main.Main.main(SourceFile:124)
    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: 1.8.9
    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: 393550272 bytes (375 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 9.19 Powered by Forge 11.15.1.2318 Optifine OptiFine_1.8.9_HD_U_M5 12 mods loaded, 0 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
        mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
        FML{8.0.99.99} [Forge Mod Loader] (forge-1.8.9-11.15.1.2318-1.8.9.jar) 
        Forge{11.15.1.2318} [Minecraft Forge] (forge-1.8.9-11.15.1.2318-1.8.9.jar) 
        replaymod{1.8.9-2.5.2} [Replay Mod] (replaymod-1.8.9-2.5.2.jar) 
        modcore{0.1.47} [ModCore] (Sk1er Modcore-0.1.47 (1.8.9).jar) 
        packdisplaymod{1.0} [Pack Display Mod] ([1.8.9] packdisplaymod.jar) 
        sidebarmod{2.0} [Sidebar Mod Revamp] ([1.8.9] Sidebar Mod Revamp.jar) 
        autogg{4.0.3} [AutoGG] (AutoGG-4.0.3 (1.8.9).jar) 
        null{1.0} [null] (Batty's+Coordinates+PLUS+Mod+for+Forge-1.15.2-0.1.0.jar) 
        ChromaHUD{3.0} [Chroma HUD] (ChromaHUD-3.0 (1.8.9).jar) 
        keystrokesmod{8.0.2} [KeystrokesMod] (Keystrokes-8.0.2 (1.8.9).jar) 
        minecraftcapes{11.0.0} [MinecraftCapes Mod] (MinecraftCapes+Forge+1.8.9-11.0.0.jar) 
    Loaded coremods (and transformers): 
FMLLoadingPlugin (AutoGG-4.0.3 (1.8.9).jar)
  club.sk1er.mods.core.forge.ClassTransformer
LoadingPlugin (replaymod-1.8.9-2.5.2.jar)
  
FMLLoadingPlugin (Keystrokes-8.0.2 (1.8.9).jar)
  
    GL info: ' Vendor: 'Intel' Version: '4.4.0 - Build 20.19.15.4703' Renderer: 'Intel(R) HD Graphics 5500'
    Launched Version: 1.8.9-forge1.8.9-11.15.1.2318-1.8.9
    LWJGL: 2.9.4
    OpenGL: Intel(R) HD Graphics 5500 GL version 4.4.0 - Build 20.19.15.4703, Intel
    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: No
    Is Modded: Definitely; Client brand changed to 'fml,forge'
    Type: Client (map_client.txt)
    Resource Packs: Default-Dark-Mode-1.8-(v1.3.0).zip
    Current Language: English (US)
    Profiler Position: N/A (disabled)
    CPU: 4x Intel(R) Core(TM) i7-5500U CPU @ 2.40GHz
    OptiFine Version: OptiFine_1.8.9_HD_U_M5
    OptiFine Build: 20210124-163719
    Render Distance Chunks: 12
    Mipmaps: 4
    Anisotropic Filtering: 1
    Antialiasing: 0
    Multitexture: false
    Shaders: null
    OpenGlVersion: 4.4.0 - Build 20.19.15.4703
    OpenGlRenderer: Intel(R) HD Graphics 5500
    OpenGlVendor: Intel
    CpuCount: 4

there is the error

1.8 is no longer supported on this forum.
Please update to a modern version of Minecraft to receive support.