ERROR: Game Crashed

[anqrmc]

Every time I attempt to run forge it crashes before it loads up and gives me the same message every time:
ERROR
Game Crashed
The game crashed whilst initializing game
Error: java.lang.VerifyError: Bad return type

Crash Report:

 

 

1

 Advanced issue found

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1

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---- Minecraft Crash Report ----

WARNING: coremods are present:
Contact their authors BEFORE contacting forge

// Shall we play a game?

Time: 4/20/20 12:14 PM
Description: Initializing game

java.lang.VerifyError: Bad return type
Exception Details:
  Location:
    Config.getDefiningResourcePack(Lnet/minecraft/network/play/server/SPacketSpawnPosition;)Lnet/minecraft/client/renderer/tileentity/TileEntitySignRenderer; @101: areturn
  Reason:
    Type 'net/minecraft/client/renderer/tileentity/TileEntityBannerRenderer' (current frame, stack[0]) is not assignable to 'net/minecraft/client/renderer/tileentity/TileEntitySignRenderer' (from method signature)
  Current Frame:
    bci: @101
    flags: { }
    locals: { 'net/minecraft/network/play/server/SPacketSpawnPosition', 'net/minecraft/client/renderer/tileentity/TileEntityStructureRenderer', 'net/minecraft/client/renderer/tileentity/TileEntitySignRenderer', 'java/util/List' }
    stack: { 'net/minecraft/client/renderer/tileentity/TileEntityBannerRenderer' }
  Bytecode:
    0x0000000: b202 d3b6 037d 4c2b b603 9a4d 2cc6 000f
    0x0000010: 2c2a b903 cc02 0099 0005 2cb0 2bb4 03cf
    0x0000020: 4e2d b903 3e01 0004 6436 0415 049b 002b
    0x0000030: 2d15 04b9 0342 0200 c000 073a 0519 05b6
    0x0000040: 0394 3a06 1906 2ab9 03cc 0200 9900 0619
    0x0000050: 06b0 8404 ffa7 ffd6 b803 af2a b603 d099
    0x0000060: 0007 b803 afb0 01b0                    
  Stackmap Table:
    append_frame(@28,Object[#9],Object[#883])
    append_frame(@43,Object[#827],Integer)
    same_frame(@82)
    chop_frame(@88,1)
    same_frame(@102)

    at java.lang.Class.getDeclaredFields0(Native Method)
    at java.lang.Class.privateGetDeclaredFields(Class.java:2583)
    at java.lang.Class.getField0(Class.java:2975)
    at java.lang.Class.getField(Class.java:1701)
    at net.minecraftforge.fml.client.FMLClientHandler.detectOptifine(FMLClientHandler.java:309)
    at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:215)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:466)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377)
    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)

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

-- Head --
Thread: Client thread
Stacktrace:
    at java.lang.Class.getDeclaredFields0(Native Method)
    at java.lang.Class.privateGetDeclaredFields(Class.java:2583)
    at java.lang.Class.getField0(Class.java:2975)
    at java.lang.Class.getField(Class.java:1701)
    at net.minecraftforge.fml.client.FMLClientHandler.detectOptifine(FMLClientHandler.java:309)
    at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:215)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:466)

-- Initialization --
Details:
Stacktrace:
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377)
    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: 378821520 bytes (361 MB) / 872415232 bytes (832 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: 
    Loaded coremods (and transformers): 
    Launched Version: 1.12.2-forge1.12.2-14.23.3.2655
    LWJGL: 2.9.4
    OpenGL: GeForce GTX 750 Ti/PCIe/SSE2 GL version 4.6.0 NVIDIA 436.30, NVIDIA Corporation
    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: ~~ERROR~~ NullPointerException: null
    Profiler Position: N/A (disabled)
    CPU: 8x Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz

 

Also sometimes gives:
ERROR
Game Crashed
The game crashed whilst initializing game
Error: java.lang.VerifyError: Inconsistent stackmap frames at branch target 13

Crash Report for this one:
 

  Reveal hidden contents

 

---- Minecraft Crash Report ----

WARNING: coremods are present:
Contact their authors BEFORE contacting forge

// Shall we play a game?

Time: 4/20/20 12:16 PM
Description: Initializing game

java.lang.VerifyError: Inconsistent stackmap frames at branch target 13
Exception Details:
  Location:
    Config.getWorldServer()Lnet/minecraft/network/play/client/CPacketRecipeInfo; @13: getstatic
  Reason:
    Type 'net/minecraft/client/gui/GuiSnooper' (current frame, locals[0]) is not assignable to 'net/minecraft/item/ItemFireball' (stack map, locals[0])
  Current Frame:
    bci: @8
    flags: { }
    locals: { 'net/minecraft/client/gui/GuiSnooper' }
    stack: { 'net/minecraft/client/gui/GuiSnooper' }
  Stackmap Frame:
    bci: @13
    flags: { }
    locals: { 'net/minecraft/item/ItemFireball' }
    stack: { }
  Bytecode:
    0x0000000: b202 d3b4 057c 4b2a c700 0501 b0b2 02d3
    0x0000010: b605 809a 0005 01b0 b202 d3b6 0583 4c2b
    0x0000020: c700 0501 b02a b405 884d 2cc7 0005 01b0
    0x0000030: 2cb6 058d 4e2b 2db6 0591 b605 943a 0419
    0x0000040: 04b0 3a04 01b0                         
  Exception Handler Table:
    bci [53, 65] => handler: 66
  Stackmap Table:
    append_frame(@13,Object[#1406])
    same_frame(@24)
    append_frame(@37,Object[#1413])
    append_frame(@48,Object[#1418])
    full_frame(@66,{Object[#1406],Object[#1413],Object[#1418],Object[#1423]},{Object[#1400]})

    at java.lang.Class.getDeclaredFields0(Native Method)
    at java.lang.Class.privateGetDeclaredFields(Class.java:2583)
    at java.lang.Class.getField0(Class.java:2975)
    at java.lang.Class.getField(Class.java:1701)
    at net.minecraftforge.fml.client.FMLClientHandler.detectOptifine(FMLClientHandler.java:309)
    at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:215)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:466)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377)
    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)

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

-- Head --
Thread: Client thread
Stacktrace:
    at java.lang.Class.getDeclaredFields0(Native Method)
    at java.lang.Class.privateGetDeclaredFields(Class.java:2583)
    at java.lang.Class.getField0(Class.java:2975)
    at java.lang.Class.getField(Class.java:1701)
    at net.minecraftforge.fml.client.FMLClientHandler.detectOptifine(FMLClientHandler.java:309)
    at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:215)
    at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:466)

-- Initialization --
Details:
Stacktrace:
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:377)
    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: 378197560 bytes (360 MB) / 872415232 bytes (832 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: 
    Loaded coremods (and transformers): 
    Launched Version: 1.12.2-forge1.12.2-14.23.3.2655
    LWJGL: 2.9.4
    OpenGL: GeForce GTX 750 Ti/PCIe/SSE2 GL version 4.6.0 NVIDIA 436.30, NVIDIA Corporation
    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: ~~ERROR~~ NullPointerException: null
    Profiler Position: N/A (disabled)
    CPU: 8x Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz

 

Let me know a way to fix this, thanks!

[anqrmc]

The version is also Forge 1.12.2!

[DaemonUmbra]

1.12 is no longer supported on this forum.

Please update to a modern version of Minecraft to receive support.