---- Minecraft Crash Report ----

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

// Surprise! Haha. Well, this is awkward.

Time: 9/8/20 1:48 AM
Description: There was a severe problem during mod loading that has caused the game to fail

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Multi Mob Core (multimob)
Caused by: java.lang.NoSuchMethodError: net.minecraftforge.common.util.EnumHelper.addSpawnPlacementType(Ljava/lang/String;Ljava/util/function/BiPredicate;)Lnet/minecraft/entity/EntityLiving$SpawnPlacementType;
at net.daveyx0.multimob.core.MultiMob.(MultiMob.java:50)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:516)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
at com.google.common.eventbus.Subscriber$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$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
at com.google.common.eventbus.EventBus.post(EventBus.java:217)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:278)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:256)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
at com.google.common.eventbus.Subscriber$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:148)
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:568)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:231)
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(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
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: Linux (arm) version 3.10.84-perf-g7f0277a
Java Version: 1.8.0-internal, Oracle Corporation
Java VM Version: OpenJDK Client VM (mixed mode), Oracle Corporation
Memory: 71741368 bytes (68 MB) / 219660288 bytes (209 MB) up to 709558272 bytes (676 MB)
JVM Flags: 2 total; -Xmx700m -Xms128m
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.42 Powered by Forge 14.23.3.2655 Optifine OptiFine_1.12.2_HD_U_F5 8 mods loaded, 8 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                                |
|:----- |:------------- |:--------------- |:------------------------------- |:---------------------------------------- |
| UC    | minecraft     | 1.12.2          | minecraft.jar                   | None                                     |
| UC    | mcp           | 9.42            | minecraft.jar                   | None                                     |
| UC    | FML           | 8.0.99.99       | forge-1.12.2-14.23.3.2655.jar   | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| UC    | forge         | 14.23.3.2655    | forge-1.12.2-14.23.3.2655.jar   | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| UC    | fpsreducer    | mc1.12.2-1.12.2 | FpsReducer1.12.2 AjGamingPH.jar | None                                     |
| UE    | multimob      | 1.0.5           | multimob-1.0.5.jar              | None                                     |
| UE    | primitivemobs | 1.2.3a          | primitivemobs-1.2.3a.jar        | None                                     |
| UE    | thesummoner   | 1.0.1-beta      | thesummoner-1.0.1.jar           | None                                     |

Loaded coremods (and transformers): 
OptiFine Version: OptiFine_1.12.2_HD_U_F5
OptiFine Build: 20191204-141934
Render Distance Chunks: 3
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 2.0 gl4es wrapper 1.1.2
OpenGlRenderer: GL4ES wrapper
OpenGlVendor: ptitSeb
CpuCount: 6