WARNING: coremods are present (crash)

Hi, I put together a lot of mods and it was working fine until it crashed out of nowhere and now I can't enter the world anymore. This was the crash report:

---- Minecraft Crash Report ----

WARNING: coremods are present:
  RBLoadingPlugin (RealBench-Mod-1.12.2.jar)
  TransformLoader (DynamicSurroundings-1.12.2-3.6.1.0.jar)
  Quark Plugin (Quark-r1.6-178.jar)
  BetterFoliageLoader (BetterFoliage-MC1.12-2.3.1.jar)
  SSLoadingPlugin (SereneSeasons-1.12.2-1.2.18-universal.jar)
  ForgelinPlugin (Forgelin-1.8.4.jar)
  CoreModLoader (Sound-Physics-1.12.2.jar)
Contact their authors BEFORE contacting forge

// Would you like a cupcake?

Time: 11/29/20 11:21 AM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
    at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429)
    at java.util.HashMap$ValueIterator.next(HashMap.java:1458)
    at net.minecraft.world.World.func_147448_a(World.java:1949)
    at net.minecraft.world.chunk.Chunk.func_76631_c(Chunk.java:856)
    at net.minecraftforge.common.chunkio.ChunkIOProvider.syncCallback(ChunkIOProvider.java:109)
    at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:94)
    at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:118)
    at net.minecraft.world.gen.ChunkProviderServer.func_186028_c(ChunkProviderServer.java:89)
    at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:135)
    at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:344)
    at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:210)
    at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:233)
    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: Mac OS X (x86_64) version 10.15.7
    Java Version: 1.8.0_74, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 1544351480 bytes (1472 MB) / 2248146944 bytes (2144 MB) up to 4294967296 bytes (4096 MB)
    JVM Flags: 7 total; -Xmx4G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
    IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 104
    FML: MCP 9.42 Powered by Forge 14.23.5.2854 Optifine OptiFine_1.12.2_HD_U_F5 34 mods loaded, 34 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-1.12.2-14.23.5.2854.jar                 | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LCHIJA | forge               | 14.23.5.2854  | forge-1.12.2-14.23.5.2854.jar                 | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | LCHIJA | alcatrazcore        | 1.0.4         | alcatrazcore-1.0.4.jar                        | 3c2d6be715971d1ed58a028cdb3fae72987fc934 |
    | LCHIJA | antiqueatlas        | 4.5.1         | antiqueatlas-1.12.2-4.5.1.jar                 | e631d7254e451d0360d0148cb21407d5511d45e9 |
    | LCHIJA | antiqueatlasoverlay | 1.2           | antiqueatlas-1.12.2-4.5.1.jar                 | e631d7254e451d0360d0148cb21407d5511d45e9 |
    | LCHIJA | betteranimals       | 5.3.0         | betteranimals-1.12.2-5.3.0.jar                | None                                     |
    | LCHIJA | wumpleutil          | 2.12.9        | wumpleutil-1.12.2-2.12.9.jar                  | None                                     |
    | LCHIJA | foodfunk            | 4.9.6         | foodfunk-1.12.2-4.9.6.jar                     | None                                     |
    | LCHIJA | jei                 | 4.15.0.293    | jei_1.12.2-4.15.0.293.jar                     | None                                     |
    | LCHIJA | quark               | r1.6-178      | Quark-r1.6-178.jar                            | None                                     |
    | LCHIJA | autoreglib          | 1.3-32        | AutoRegLib-1.3-32.jar                         | None                                     |
    | LCHIJA | backpack            | 3.0.2         | backpack-3.0.2-1.12.2.jar                     | None                                     |
    | LCHIJA | betternether        | 0.1.8.6       | Better-Nether-Mod-1.12.2.jar                  | None                                     |
    | LCHIJA | forgelin            | 1.8.4         | Forgelin-1.8.4.jar                            | None                                     |
    | LCHIJA | betterfoliage       | 2.3.1         | BetterFoliage-MC1.12-2.3.1.jar                | None                                     |
    | LCHIJA | bibliocraft         | 2.4.5         | BiblioCraft[v2.4.5][MC1.12.2].jar             | None                                     |
    | LCHIJA | biomesoplenty       | 7.0.1.2443    | BiomesOPlenty-1.12.2-7.0.1.2443-universal.jar | None                                     |
    | LCHIJA | craftstudioapi      | 1.0.0         | CraftStudio-1.0.0.93-mc1.12-alpha.jar         | None                                     |
    | LCHIJA | sereneseasons       | 1.2.18        | SereneSeasons-1.12.2-1.2.18-universal.jar     | None                                     |
    | LCHIJA | orelib              | 3.6.0.1       | OreLib-1.12.2-3.6.0.1.jar                     | 7a2128d395ad96ceb9d9030fbd41d035b435753a |
    | LCHIJA | dsurround           | 3.6.1.0       | DynamicSurroundings-1.12.2-3.6.1.0.jar        | 7a2128d395ad96ceb9d9030fbd41d035b435753a |
    | LCHIJA | dynamictrees        | 1.12.2-0.9.7  | DynamicTrees-1.12.2-0.9.7.jar                 | None                                     |
    | LCHIJA | dynamictreesbop     | 1.12.2-1.4.1e | DynamicTreesBOP-1.12.2-1.4.1e.jar             | None                                     |
    | LCHIJA | mcjtylib_ng         | 3.5.4         | mcjtylib-1.12-3.5.4.jar                       | None                                     |
    | LCHIJA | mobends             | 0.24          | mobends-0.24_for_MC-1.12.jar                  | None                                     |
    | LCHIJA | notreepunching      | 2.0.21        | notreepunching-2.0.21.jar                     | None                                     |
    | LCHIJA | realdrops           | 1.2.14        | RealisticItemDrops-1.2.14.jar                 | None                                     |
    | LCHIJA | corerm              | 1.3.3         | RikMuldsCore_1.3.3.jar                        | None                                     |
    | LCHIJA | soundphysics        | 1.0.8-1       | Sound-Physics-1.12.2.jar                      | None                                     |
    | LCHIJA | toughasnails        | 3.1.0.139     | ToughAsNails-1.12.2-3.1.0.139-universal.jar   | None                                     |
    | LCHIJA | waystones           | 4.1.0         | Waystones_1.12.2-4.1.0.jar                    | None                                     |
    | LCHIJA | worleycaves         | 1.5.1         | worleycaves-1.5.1.jar                         | None                                     |

    Loaded coremods (and transformers): 
RBLoadingPlugin (RealBench-Mod-1.12.2.jar)
  pw.prok.realbench.asm.RBTransformer
TransformLoader (DynamicSurroundings-1.12.2-3.6.1.0.jar)
  
Quark Plugin (Quark-r1.6-178.jar)
  vazkii.quark.base.asm.ClassTransformer
BetterFoliageLoader (BetterFoliage-MC1.12-2.3.1.jar)
  mods.betterfoliage.loader.BetterFoliageTransformer
SSLoadingPlugin (SereneSeasons-1.12.2-1.2.18-universal.jar)
  sereneseasons.asm.transformer.EntityRendererTransformer
  sereneseasons.asm.transformer.WorldTransformer
ForgelinPlugin (Forgelin-1.8.4.jar)
  
CoreModLoader (Sound-Physics-1.12.2.jar)
  com.sonicether.soundphysics.CoreModInjector
    GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
    No Tree Punching: You are not running an official build. This version will NOT be supported by the author.
    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_F5
    OptiFine Build: 20191204-141934
    Render Distance Chunks: 12
    Mipmaps: 4
    Anisotropic Filtering: 1
    Antialiasing: 0
    Multitexture: false
    Shaders: null
    OpenGlVersion: 2.1 INTEL-14.7.8
    OpenGlRenderer: Intel HD Graphics 5000 OpenGL Engine
    OpenGlVendor: Intel Inc.
    CpuCount: 4

I am playing on a Mac. I really don't know what is wrong so I really need some help.