Whenever I try to create a new world or open one my game crashes. I have some mods installed  

Here is the crash report:

 

---- Minecraft Crash Report ----

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

// Don't do that.

Time: 4/15/20 8:25 PM
Description: Exception in server tick loop

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 biomesoplenty.common.world.ChunkGeneratorOverworldBOP.func_185931_b(ChunkGeneratorOverworldBOP.java:569)
	at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1019)
	at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:999)
	at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:157)
	at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:344)
	at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:173)
	at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:196)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486)
	at java.lang.Thread.run(Thread.java:745)


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: 2005001208 bytes (1912 MB) / 2919235584 bytes (2784 MB) up to 4294967296 bytes (4096 MB)
	JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx4G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	IntCache: cache: 1, tcache: 1, allocated: 3, tallocated: 104
	FML: MCP 9.42 Powered by Forge 14.23.5.2840 Optifine OptiFine_1.12.2_HD_U_C5 20 mods loaded, 20 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-1.12.2-14.23.5.2840.jar                 | None      |
	| LCHIJA | forge         | 14.23.5.2840      | forge-1.12.2-14.23.5.2840.jar                 | None      |
	| LCHIJA | baubles       | 1.5.2             | Baubles-1.12-1.5.2.jar                        | None      |
	| LCHIJA | bibliocraft   | 2.4.3             | BiblioCraft[v2.4.3][MC1.12.0].jar             | None      |
	| LCHIJA | biomesoplenty | 7.0.1.2312        | BiomesOPlenty-1.12.2-7.0.1.2312-universal.jar | None      |
	| LCHIJA | botania       | r1.10-347         | Botania r1.10-347.jar                         | None      |
	| LCHIJA | doggytalents  | 1.15.1.5          | DoggyTalents-1.12.2-1.15.1.5.jar              | None      |
	| LCHIJA | jei           | 4.15.0.293        | jei_1.12.2-4.15.0.293.jar                     | None      |
	| LCHIJA | forestry      | 5.5.6.197         | forestry_1.12.2-5.5.6.197.jar                 | None      |
	| LCHIJA | inventorypets | 2.0.4             | inventorypets-1.12-2.0.4.jar                  | None      |
	| LCHIJA | ironchest     | 1.12.2-7.0.40.824 | Iron-Chests-Mod-1.12.2.jar                    | None      |
	| LCHIJA | ironbackpacks | 1.12.2-3.0.8-12   | IronBackpacks-1.12.2-3.0.8-12.jar             | None      |
	| LCHIJA | journeymap    | 1.12.2-5.6.0b1    | journeymap-1.12.2-5.6.0b1.jar                 | None      |
	| LCHIJA | mantle        | 1.12-1.3.1.21     | Mantle-1.12-1.3.1.21 (1).jar                  | None      |
	| LCHIJA | harvestcraft  | 1.12.2zb          | Pam's+HarvestCraft+1.12.2zg.jar               | None      |
	| LCHIJA | projecte      | 1.12.2-PE1.4.1    | ProjectE-1.12.2-PE1.4.1.jar                   | None      |
	| LCHIJA | tconstruct    | 1.12-2.8.1.49     | TConstruct-1.12.jar                           | None      |
	| LCHIJA | treechopper   | 1.2.4             | TreeChopper-1.12.2-1.2.4.jar                  | None      |

	Loaded coremods (and transformers): 
	GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
	Pulsar/tconstruct loaded Pulses: 
		- TinkerCommons (Enabled/Forced)
		- TinkerWorld (Enabled/Not Forced)
		- TinkerTools (Enabled/Not Forced)
		- TinkerHarvestTools (Enabled/Forced)
		- TinkerMeleeWeapons (Enabled/Forced)
		- TinkerRangedWeapons (Enabled/Forced)
		- TinkerModifiers (Enabled/Forced)
		- TinkerSmeltery (Enabled/Not Forced)
		- TinkerGadgets (Enabled/Not Forced)
		- TinkerOredict (Enabled/Forced)
		- TinkerIntegration (Enabled/Forced)
		- TinkerFluids (Enabled/Forced)
		- TinkerMaterials (Enabled/Forced)
		- TinkerModelRegister (Enabled/Forced)

	Profiler Position: N/A (disabled)
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'fml,forge'
	OptiFine Version: OptiFine_1.12.2_HD_U_C5
	Render Distance Chunks: 8
	Mipmaps: 4
	Anisotropic Filtering: 1
	Antialiasing: 0
	Multitexture: false
	Shaders: null
	OpenGlVersion: 4.6.0 NVIDIA 389.12
	OpenGlRenderer: GeForce 820M/PCIe/SSE2
	OpenGlVendor: NVIDIA Corporation
	CpuCount: 4

 

1.12 is no longer supported due to age.

Please update to a modern (1.14.4/1.15.2) version to receive support.

 

More information on supported versions can be found in in the LTS link at the top of every page