I cant deal with this issue dude! it says there are "coremods present" (forgeendertech and CTM core plugin) PLEASE help!

Spoiler

---- Minecraft Crash Report ----

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

// Hey, that tickles! Hehehe!

Time: 5/4/20 5:51 PM
Description: Unexpected error

java.lang.RuntimeException: No OpenGL context found in the current thread.
    at org.lwjgl.opengl.GLContext.getCapabilities(GLContext.java:124)
    at org.lwjgl.opengl.GL11.glGetError(GL11.java:1299)
    at net.minecraft.client.renderer.GlStateManager.func_187434_L(SourceFile:838)
    at net.minecraft.client.Minecraft.func_71361_d(Minecraft.java:1030)
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1103)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:398)
    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:
---------------------------------------------------------------------------------------

-- 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: 354401200 bytes (337 MB) / 1073741824 bytes (1024 MB) up to 8589934592 bytes (8192 MB)
    JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx8G -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 14.23.5.2847 27 mods loaded, 27 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-1.12.2-14.23.5.2847.jar                 | None      |
    | L     | forge             | 14.23.5.2847      | forge-1.12.2-14.23.5.2847.jar                 | None      |
    | L     | adlods            | 1.12.2-1.0.7.1    | AdLods-1.12.2-1.0.7.1-build.0441.jar          | None      |
    | L     | aiimprovements    | 0.0.1.3           | AIImprovements-1.12-0.0.1b3.jar               | None      |
    | L     | baubles           | 1.5.2             | Baubles-1.12-1.5.2.jar                        | None      |
    | L     | bibliocraft       | 2.4.5             | BiblioCraftv2.4.5MC1.12.2.jar                 | None      |
    | L     | bountifulbaubles  | 0.0.1             | BountifulBaubles-1.12.2-0.1.5.jar             | None      |
    | L     | chameleon         | 1.12-4.1.3        | Chameleon-1.12-4.1.3.jar                      | None      |
    | L     | chisel            | MC1.12.2-1.0.2.45 | Chisel-MC1.12.2-1.0.2.45.jar                  | None      |
    | L     | chiselsandbits    | 14.33             | chiselsandbits-14.33_1.jar                    | None      |
    | L     | clumps            | 3.1.2             | Clumps-3.1.2.jar                              | None      |
    | L     | dungeontactics    | DT-0.16.6         | DungeonTactics-1.12.2-0.16.6.jar              | None      |
    | L     | extrautils2       | 1.0               | extrautils2-1.12-1.9.9.jar                    | None      |
    | L     | inventorypets     | 2.0.4             | inventorypets-1.12-2.0.4.jar                  | None      |
    | L     | jei               | 4.15.0.291        | jei_1.12.2-4.15.0.291.jar                     | None      |
    | L     | journeymap        | 1.12.2-5.7.1      | journeymap-1.12.2-5.7.1_1.jar                 | None      |
    | L     | mantle            | 1.12-1.3.3.55     | Mantle-1.12-1.3.3.55_1.jar                    | None      |
    | L     | harvestcraft      | 1.12.2zb          | PamsHarvestCraft1.12.2zg_1.jar                | None      |
    | L     | potioncore        | 1.9_for_1.12.2    | PotionCore-1.9_for_1.12.2.jar                 | None      |
    | L     | progressivebosses | 1.5.4             | ProgressiveBosses-1.5.4-mc1.12.x.jar          | None      |
    | L     | qualitytools      | 1.0.7_for_1.12.2  | QualityTools-1.0.7_for_1.12.2.jar             | None      |
    | L     | storagedrawers    | 1.12.2-5.4.1      | StorageDrawers-1.12.2-5.4.1.jar               | None      |
    | L     | tconstruct        | 1.12.2-2.13.0.183 | TConstruct-1.12.2-2.13.0.183.jar              | None      |
    | L     | tinkersjei        | 1.2               | tinkersjei-1.2.jar                            | None      |
    | L     | twilightforest    | 3.10.1013         | twilightforest-1.12.2-3.10.1013-universal.jar | None      |

    Loaded coremods (and transformers): 
    GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
    Launched Version: 1.12.2-forge1.12.2-14.23.5.2847
    LWJGL: 2.9.4
    OpenGL: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
    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: LOLCAT (Kingdom of Cats)
    Profiler Position: N/A (disabled)
    CPU: 16x AMD Ryzen 7 3700X 8-Core Processor 

Crash report ^^

You won't get any support here. Coremods are not supported or encouraged by the official forge modding community.

What is a coremod?

 

A coremod is somewhat of an "addon" to forge that allows the developer to edit all of the vanilla source code of Minecraft. Considering you have "coremods present," you either are using a coremod or may have downloaded a fake verison of forge? not really sure tbh

I have downloaded core mods I believe.Where can I get help for this issue if not here?

 

1.12 is no longer supported on this forum.

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