Forge Not Working

[Clipzzo]

So I recently installed Forge and it was working perfectly fine but then I tried using opttfine with it and now it wont even load in. I went in and deleted optifine form it and even re-downloaded Forge multiple times but I keep getting the same crash report. Please help...!

 

Error: java.lang.NoSuchMethodError: net.minecraft.client.renderer.entity.EntityRendererManager.validateRendererExistence()V

 

Description: Unexpected error

java.lang.NoSuchMethodError: net.minecraft.client.renderer.entity.EntityRendererManager.validateRendererExistence()V
    at net.minecraftforge.fml.client.registry.RenderingRegistry.loadEntityRenderers(RenderingRegistry.java:50) ~[?:?] {re:classloading}
    at net.minecraftforge.fml.client.ClientModLoader.postSidedRunnable(ClientModLoader.java:127) ~[?:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraftforge.fml.client.ClientModLoader$$Lambda$2822/413390219.accept(Unknown Source) ~[?:?] {}
    at net.minecraftforge.fml.ModLoader.lambda$loadMods$14(ModLoader.java:158) ~[?:?] {re:classloading}
    at net.minecraftforge.fml.ModLoader$$Lambda$2954/720375029.run(Unknown Source) ~[?:?] {}
    at net.minecraft.resources.AsyncReloader.func_219557_a(SourceFile:71) ~[?:?] {re:classloading}
    at net.minecraft.resources.AsyncReloader$$Lambda$2921/1498973311.run(Unknown Source) ~[?:?] {}
    at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213166_h(ThreadTaskExecutor.java:173) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:OptiFine:default}
    at net.minecraft.util.concurrent.RecursiveEventLoop.func_213166_h(SourceFile:23) ~[?:?] {re:classloading}
    at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213168_p(ThreadTaskExecutor.java:135) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:OptiFine:default}
    at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213160_bf(ThreadTaskExecutor.java:115) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:OptiFine:default}
    at net.minecraft.client.Minecraft.func_195542_b(Minecraft.java:898) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:554) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.main.Main.main(SourceFile:204) [?:?] {re:classloading}
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {}
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {}
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {}
    at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {}
    at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56) [forge-1.15.2-31.1.27.jar:31.1] {}
    at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$406/2008159348.call(Unknown Source) [forge-1.15.2-31.1.27.jar:31.1] {}
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-5.0.0-milestone.4.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-5.0.0-milestone.4.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-5.0.0-milestone.4.jar:?] {}
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) [modlauncher-5.0.0-milestone.4.jar:?] {}
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [modlauncher-5.0.0-milestone.4.jar:?] {}

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-- System Details --
Details:
    Minecraft Version: 1.15.2
    Minecraft Version ID: 1.15.2
    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: 1261278872 bytes (1202 MB) / 2147483648 bytes (2048 MB) up to 2147483648 bytes (2048 MB)
    CPUs: 12
    JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
    ModLauncher: 5.0.0-milestone.4+67+b1a340b
    ModLauncher launch target: fmlclient
    ModLauncher naming: srg
    ModLauncher services: 
        /eventbus-2.0.0-milestone.1-service.jar eventbus PLUGINSERVICE 
        /forge-1.15.2-31.1.27.jar object_holder_definalize PLUGINSERVICE 
        /forge-1.15.2-31.1.27.jar runtime_enum_extender PLUGINSERVICE 
        /accesstransformers-2.0.4-shadowed.jar accesstransformer PLUGINSERVICE 
        /forge-1.15.2-31.1.27.jar capability_inject_definalize PLUGINSERVICE 
        /forge-1.15.2-31.1.27.jar runtimedistcleaner PLUGINSERVICE 
        /preview_OptiFine_1.15.2_HD_U_G1_pre9.jar OptiFine TRANSFORMATIONSERVICE 
        /forge-1.15.2-31.1.27.jar fml TRANSFORMATIONSERVICE 
    FML: 31.1
    Forge: net.minecraftforge:31.1.27
    FML Language Providers: 
        javafml@31.1
        minecraft@1
    Mod List: 
        forge-1.15.2-31.1.27-client.jar Minecraft {minecraft@1.15.2 ENQUEUE_IMC}
        useful_backpacks-1.15.2-1.9.4.63.jar Useful Backpacks {usefulbackpacks@1.9.4.63 ENQUEUE_IMC}
        forge-1.15.2-31.1.27-universal.jar Forge {forge@31.1.27 ENQUEUE_IMC}
        u_team_core-1.15.2-2.11.0.156.jar U Team Core {uteamcore@2.11.0.156 ENQUEUE_IMC}
        OreExcavation-1.7.151.jar Ore Excavation {oreexcavation@NONE ENQUEUE_IMC}
    Launched Version: 1.15.2-forge-31.1.27
    Backend library: LWJGL version 3.2.2 build 10
    Backend API: Radeon RX 580 Series GL version 4.6.13559 Compatibility Profile Context 26.20.12028.2, ATI Technologies Inc.
    GL Caps: Using framebuffer using OpenGL 3.0
    Using VBOs: Yes
    Is Modded: Definitely; Client brand changed to 'forge'
    Type: Client (map_client.txt)
    Resource Packs: vanilla
    Current Language: ~~ERROR~~ NullPointerException: null
    CPU: 12x AMD Ryzen 5 1600 Six-Core Processor 
    OptiFine Version: OptiFine_1.15.2_HD_U_G1_pre9
    OptiFine Build: 20200223-095745
    Render Distance Chunks: 20
    Mipmaps: 4
    Anisotropic Filtering: 1
    Antialiasing: 0
    Multitexture: false
    Shaders: null
    OpenGlVersion: 4.6.13559 Compatibility Profile Context 26.20.12028.2
    OpenGlRenderer: Radeon RX 580 Series
    OpenGlVendor: ATI Technologies Inc.
    CpuCount: 12

[DaemonUmbra]

Try removing Optifine