Forge Crash. Please help!

[Despacito_lover_3006]

My minecraft 1.12.2 crashes. I have installed Forge (recommended, although I used the newest) When the crash log on launcher appears it shows some exepction with FML and forge. When I opened crash log saved on my disc it showed this: Caused by: java.lang.NoClassDefFoundError: net/minecraftforge/common/IRarity. I am retarded and I can't send the whole crash log so I will copy and paste it simply :

 

---- Minecraft Crash Report ----

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

// Daisy, daisy...

Time: 5/12/19 4:49 PM
Description: There was a severe problem during mod loading that has caused the game to fail

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Actually Additions (actuallyadditions)
Caused by: java.lang.NoClassDefFoundError: net/minecraftforge/common/IRarity
    at de.ellpeck.actuallyadditions.mod.fluids.InitFluids.registerFluidBlock(InitFluids.java:55)
    at de.ellpeck.actuallyadditions.mod.fluids.InitFluids.init(InitFluids.java:40)
    at de.ellpeck.actuallyadditions.mod.ActuallyAdditions.preInit(ActuallyAdditions.java:103)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:624)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
    at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
    at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
    at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:218)
    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:196)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
    at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
    at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
    at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:135)
    at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:627)
    at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:252)
    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(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.ClassNotFoundException: net.minecraftforge.common.IRarity
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)

[Despacito_lover_3006]

I am 2x retarded bc it says ''contact the mods authors first'', but anyways can you help me?

[Cadiboo]

Make sure you’re using the latest forge version

[Despacito_lover_3006]

I tried using the latest, reccommended and some other but it just doesn't work the same problem some signature with forge and fml, I tried uninstalling some mods but it doesn't work too

[Despacito_lover_3006]

I tried to delete some mods, and try other and again and again etc. This is the latest crash log (this one for the server/world I am on I tried making other but whatever...)

---- Minecraft Crash Report ----

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

// Everything's going to plan. No, really, that was supposed to happen.

Time: 5/13/19 6:25 PM
Description: Exception ticking world

java.lang.NoSuchMethodError: net.minecraft.entity.EntityLiving$SpawnPlacementType.canSpawnAt(Lnet/minecraft/world/World;Lnet/minecraft/util/math/BlockPos;)Z
    at net.minecraft.world.WorldEntitySpawner.func_180267_a(WorldEntitySpawner.java:226)
    at net.minecraft.world.WorldEntitySpawner.func_77191_a(WorldEntitySpawner.java:282)
    at net.minecraft.world.gen.ChunkGeneratorOverworld.func_185931_b(ChunkGeneratorOverworld.java:466)
    at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1019)
    at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:980)
    at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:157)
    at net.minecraft.server.management.PlayerChunkMapEntry.func_187268_a(PlayerChunkMapEntry.java:126)
    at net.minecraft.server.management.PlayerChunkMap.func_72693_b(SourceFile:147)
    at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:227)
    at WorldServerOF.func_72835_b(WorldServerOF.java:37)
    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:756)
    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668)
    at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:239)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
    at java.lang.Thread.run(Unknown Source)

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

-- Head --
Thread: Server thread
Stacktrace:
    at net.minecraft.world.WorldEntitySpawner.func_180267_a(WorldEntitySpawner.java:226)
    at net.minecraft.world.WorldEntitySpawner.func_77191_a(WorldEntitySpawner.java:282)
    at net.minecraft.world.gen.ChunkGeneratorOverworld.func_185931_b(ChunkGeneratorOverworld.java:466)
    at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1019)
    at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:980)
    at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:157)
    at net.minecraft.server.management.PlayerChunkMapEntry.func_187268_a(PlayerChunkMapEntry.java:126)
    at net.minecraft.server.management.PlayerChunkMap.func_72693_b(SourceFile:147)
    at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:227)
    at WorldServerOF.func_72835_b(WorldServerOF.java:37)

-- Affected level --
Details:
    Level name: Nowy świat
    All players: 1 total; [EntityPlayerMP['Selfie500'/206, l='Nowy świat', x=272.99, y=64.00, z=-118.60]]
    Chunk stats: ServerChunkCache: 1063 Drop: 0
    Level seed: -5228407060899416858
    Level generator: ID 00 - default, ver 1. Features enabled: true
    Level generator options: 
    Level spawn location: World: (256,64,-129), Chunk: (at 0,4,15 in 16,-9; contains blocks 256,0,-144 to 271,255,-129), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
    Level time: 217 game time, 217 day time
    Level dimension: 0
    Level storage version: 0x04ABD - Anvil
    Level weather: Rain time: 135128 (now: false), thunder time: 60312 (now: false)
    Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:756)
    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668)
    at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:239)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
    at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
    Minecraft Version: 1.12.2
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_211, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 312919680 bytes (298 MB) / 1531969536 bytes (1461 MB) up to 3817865216 bytes (3641 MB)
    JVM Flags: 2 total; -Xmx4G -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump
    IntCache: cache: 0, tcache: 0, allocated: 14, tallocated: 94
    FML: MCP 9.42 Powered by Forge 14.23.5.2836 Optifine OptiFine_1.12.2_HD_U_C6 15 mods loaded, 15 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                                |
    |:------ |:------------------- |:------------ |:----------------------------- |:---------------------------------------- |
    | LCHIJA | minecraft           | 1.12.2       | minecraft.jar                 | None                                     |
    | LCHIJA | mcp                 | 9.42         | minecraft.jar                 | None                                     |
    | LCHIJA | FML                 | 8.0.99.99    | forge-1.12.2-14.23.5.2836.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LCHIJA | forge               | 14.23.5.2836 | forge-1.12.2-14.23.5.2836.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LCHIJA | backpack            | 3.0.2        | Backpacks-Mod-1.12.2.jar      | None                                     |
    | LCHIJA | buildcraftlib       | 7.99.14      | BuildCraft-Mod-1.12.2.jar     | None                                     |
    | LCHIJA | buildcraftcore      | 7.99.14      | BuildCraft-Mod-1.12.2.jar     | None                                     |
    | LCHIJA | buildcraftbuilders  | 7.99.14      | BuildCraft-Mod-1.12.2.jar     | None                                     |
    | LCHIJA | buildcraftenergy    | 7.99.14      | BuildCraft-Mod-1.12.2.jar     | None                                     |
    | LCHIJA | buildcraftfactory   | 7.99.14      | BuildCraft-Mod-1.12.2.jar     | None                                     |
    | LCHIJA | buildcraftrobotics  | 7.99.14      | BuildCraft-Mod-1.12.2.jar     | None                                     |
    | LCHIJA | buildcraftsilicon   | 7.99.14      | BuildCraft-Mod-1.12.2.jar     | None                                     |
    | LCHIJA | buildcrafttransport | 7.99.14      | BuildCraft-Mod-1.12.2.jar     | None                                     |
    | LCHIJA | jei                 | 4.15.0.268   | jei_1.12.2-4.15.0.268.jar     | None                                     |
    | LCHIJA | treechopper         | 1.2.4        | Tree-Chopper-Mod-1.12.2.jar   | None                                     |

    Loaded coremods (and transformers): 
    GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
    Profiler Position: N/A (disabled)
    Player Count: 1 / 8; [EntityPlayerMP['Selfie500'/206, l='Nowy świat', x=272.99, y=64.00, z=-118.60]]
    Type: Integrated Server (map_client.txt)
    Is Modded: Definitely; Client brand changed to 'fml,forge'

[DaemonUmbra]

The filenames of some of your mods suggests you are not getting them from official sources, please read my signature for more info on why this is a bad thing.

[Despacito_lover_3006]

Thank you all for help! Turns out that optifine version was doing it all, I should have checked before ?