PLEASE HELP! ADDED MOD NOW GAME WON'T LAUNCH

[nuggetfactory]

Hi, I am on a mac and tried using forge to add mods. But it seems like the game detects the mods and is crashing before launch. What should I do. 

Crash Report: 

---- Minecraft Crash Report ----
// Shall we play a game?

Time: 12/17/19 11:55 PM
Description: Initializing game

java.lang.NoClassDefFoundError: net/minecraft/util/IItemProvider
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at net.minecraftforge.common.capabilities.CapabilityManager$2.apply(CapabilityManager.java:162)
    at net.minecraftforge.common.capabilities.CapabilityManager$2.apply(CapabilityManager.java:156)
    at net.minecraftforge.common.capabilities.CapabilityManager.register(CapabilityManager.java:95)
    at net.minecraftforge.items.CapabilityItemHandler.register(CapabilityItemHandler.java:40)
    at net.minecraftforge.common.ForgeModContainer.preInit(ForgeModContainer.java:476)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$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$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:218)
    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:196)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$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: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(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)
Caused by: java.lang.ClassNotFoundException: net.minecraft.util.IItemProvider
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 43 more
Caused by: java.lang.NullPointerException
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
    ... 45 more

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

-- Head --
Thread: Client thread
Stacktrace:
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at net.minecraftforge.common.capabilities.CapabilityManager$2.apply(CapabilityManager.java:162)
    at net.minecraftforge.common.capabilities.CapabilityManager$2.apply(CapabilityManager.java:156)
    at net.minecraftforge.common.capabilities.CapabilityManager.register(CapabilityManager.java:95)
    at net.minecraftforge.items.CapabilityItemHandler.register(CapabilityItemHandler.java:40)
    at net.minecraftforge.common.ForgeModContainer.preInit(ForgeModContainer.java:476)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$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$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
    at com.google.common.eventbus.EventBus.post(EventBus.java:217)
    at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:218)
    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:196)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
    at com.google.common.eventbus.Subscriber$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: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)

-- Initialization --
Details:
Stacktrace:
    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)

-- System Details --
Details:
    Minecraft Version: 1.12.2
    Operating System: Mac OS X (x86_64) version 10.14.6
    Java Version: 1.8.0_74, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 873987984 bytes (833 MB) / 1073741824 bytes (1024 MB) up to 2147483648 bytes (2048 MB)
    JVM Flags: 7 total; -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP 9.42 Powered by Forge 14.23.5.2768 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                                |
    |:----- |:--------------------------- |:---------------- |:------------------------------------------- |:---------------------------------------- |
    | UCH   | minecraft                   | 1.12.2           | minecraft.jar                               | None                                     |
    | UCH   | mcp                         | 9.42             | minecraft.jar                               | None                                     |
    | UCH   | FML                         | 8.0.99.99        | forge-1.12.2-14.23.5.2768.jar               | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UC    | forge                       | 14.23.5.2768     | forge-1.12.2-14.23.5.2768.jar               | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UC    | carrots                     | 1.0.0b1          | carrotslib-mc1.12.2-1.0.0b1.jar             | None                                     |
    | UC    | armorunder                  | 1.0.0            | armorunder-mc1.12.2-1.0.0.jar               | None                                     |
    | UC    | battletowers                | 1.6.5            | BattleTowers-1.12.2.jar                     | None                                     |
    | UC    | baubles                     | 1.5.2            | Baubles-1.12-1.5.2.jar                      | None                                     |
    | UC    | mujmajnkraftsbettersurvival | 1.4.1            | better_survival-1.4.1.jar                   | None                                     |
    | UC    | campfire                    | 1.2              | campfire-1.12-v1.2.jar                      | None                                     |
    | UC    | potioncore                  | 1.8_for_1.12.2   | PotionCore-1.8_for_1.12.2.jar               | None                                     |
    | UC    | qualitytools                | 1.0.7_for_1.12.2 | QualityTools-1.0.7_for_1.12.2.jar           | None                                     |
    | UC    | spartanshields              | 1.5.4            | SpartanShields-1.12.2-1.5.4.jar             | None                                     |
    | UC    | spartanweaponry             | beta 1.3.8       | SpartanWeaponry-1.12.2-beta-1.3.8.jar       | None                                     |
    | UC    | toughasnails                | 3.1.0.139        | ToughAsNails-1.12.2-3.1.0.139-universal.jar | None                                     |
    | UC    | tanspit                     | 1.12.2-1.3       | tanspit-1.12.2-1.3.jar                      | None                                     |
    | UC    | variedcommodities           | 1.12.2           | VariedCommodities_1.12.2(21nov19).jar       | None                                     |
    | UC    | wearablebackpacks           | 3.1.4            | WearableBackpacks-1.12.2-3.1.4.jar          | None                                     |
    | UC    | wolfarmor                   | 2.2.3.6          | wolfarmor-1.12.2-2.2.3.1798-universal.jar   | None                                     |
    | UC    | xpfromharvest               | 1.1.0            | xpfromharvest-1.12.2-1.1.0.jar              | None                                     |

    Loaded coremods (and transformers): 
    GL info: ' Vendor: 'Intel Inc.' Version: '2.1 INTEL-12.10.14' Renderer: 'Intel(R) Iris(TM) Graphics 550'
    Launched Version: 1.12.2-forge1.12.2-14.23.5.2768
    LWJGL: 2.9.2
    OpenGL: Intel(R) Iris(TM) Graphics 550 GL version 2.1 INTEL-12.10.14, Intel Inc.
    GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because ARB_framebuffer_object 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: vanilla, programer_art
    Current Language: English (US)
    Profiler Position: N/A (disabled)
    CPU: 4x Intel(R) Core(TM) i5-6267U CPU @ 2.90GHz