This comes along when trying to enter a new world. I can open launcher and enter everything rather quickly. Mods I have downloaded:

 

-Mo Creatures

-Dr Crayfish Furniture Mod

I used to have Toomanyitems but deleted it like 30 minutes ago, and I used to have Fossil Archeology. 
 

 

---- Minecraft Crash Report ----
// Who set us up the TNT?

Time: 6/15/18 7:28 AM
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
    at net.minecraft.world.World.getSkyColorBody(World.java:1481)
    at net.minecraft.world.WorldProvider.getSkyColor(WorldProvider.java:463)
    at net.minecraft.world.World.func_72833_a(World.java:1472)
    at net.minecraft.client.renderer.EntityRenderer.func_78466_h(EntityRenderer.java:1721)
    at net.minecraft.client.renderer.EntityRenderer.func_175068_a(EntityRenderer.java:1273)
    at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1259)
    at net.minecraft.client.renderer.EntityRenderer.func_181560_a(EntityRenderer.java:1062)
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1117)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:397)
    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:483)
    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 net.minecraft.world.World.getSkyColorBody(World.java:1481)
    at net.minecraft.world.WorldProvider.getSkyColor(WorldProvider.java:463)
    at net.minecraft.world.World.func_72833_a(World.java:1472)
    at net.minecraft.client.renderer.EntityRenderer.func_78466_h(EntityRenderer.java:1721)
    at net.minecraft.client.renderer.EntityRenderer.func_175068_a(EntityRenderer.java:1273)
    at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1259)

 

-- Affected level --
Details:
    Level name: MpServer
    All players: 0 total; []
    Chunk stats: MultiplayerChunkCache: 0, 0
    Level seed: 0
    Level generator: ID 00 - default, ver 1. Features enabled: false
    Level generator options: 
    Level spawn location: World: (8,64,8), Chunk: (at 8,4,8 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
    Level time: 0 game time, 0 day time
    Level dimension: 0
    Level storage version: 0x00000 - Unknown?
    Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
    Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
    Forced entities: 0 total; []
    Retry entities: 0 total; []
    Server brand: ~~ERROR~~ NullPointerException: null
    Server type: Integrated singleplayer server
Stacktrace:
    at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:420)
    at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2738)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:426)
    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:483)
    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 7 (x86) version 6.1
    Java Version: 1.8.0_25, Oracle Corporation
    Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
    Memory: 285925888 bytes (272 MB) / 721420288 bytes (688 MB) up to 1073741824 bytes (1024 MB)
    JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
    IntCache: cache: 0, tcache: 9, allocated: 20, tallocated: 86
    FML: MCP 9.42 Powered by Forge 14.23.4.2708 6 mods loaded, 6 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                                |
    |:--------- |:----------- |:------------ |:---------------------------------------- |:---------------------------------------- |
    | UCHIJAAAA | minecraft   | 1.12.2       | minecraft.jar                            | None                                     |
    | UCHIJAAAA | mcp         | 9.42         | minecraft.jar                            | None                                     |
    | UCHIJAAAA | FML         | 8.0.99.99    | forge-1.12.2-14.23.4.2708.jar            | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UCHIJAAAA | forge       | 14.23.4.2708 | forge-1.12.2-14.23.4.2708.jar            | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UCHIJAAAA | mocreatures | 12.0.3       | Mo-Creatures-Mod-1.12.2 (1).jar          | None                                     |
    | UCHIJAAAA | cfm         | 4.1.5        | MrCrayfishs-Furniture-Mod-1.12.2 (1).jar | None                                     |

    Loaded coremods (and transformers): 
    GL info: ' Vendor: 'Intel' Version: '3.1.0 - Build 9.17.10.4229' Renderer: 'Intel(R) HD Graphics 2000'
    Launched Version: 1.12.2-forge1.12.2-14.23.4.2708
    LWJGL: 2.9.4
    OpenGL: Intel(R) HD Graphics 2000 GL version 3.1.0 - Build 9.17.10.4229, 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: Yes
    Is Modded: Definitely; Client brand changed to 'fml,forge'
    Type: Client (map_client.txt)
    Resource Packs: 
    Current Language: English (US)
    Profiler Position: N/A (disabled)
    CPU: 4x Intel(R) Core(TM) i3-2100 CPU @ 3.10GHz

Either mod could've caused the crash, but there's no way to identify which one it is. Remove either one of them, check if it crashes, if so, remove the other.