This is my first time using Forge and I'm trying to make a modded server for me and my friends. However, just upon loading the Forge version of Minecraft i get this error message. The crash report is,

 

---- Minecraft Crash Report ----
// Why is it breaking :(

Time: 4/7/19 2:20 PM
Description: Initializing game

java.lang.NoSuchMethodError: net.minecraftforge.fml.relauncher.ReflectionHelper.findField(Ljava/lang/Class;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/reflect/Field;
    at WayofTime.bloodmagic.item.armour.ItemLivingArmour.<clinit>(ItemLivingArmour.java:60)
    at WayofTime.bloodmagic.core.RegistrarBloodMagicItems.registerItems(RegistrarBloodMagicItems.java:186)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_26_RegistrarBloodMagicItems_registerItems_Register.invoke(.dynamic)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
    at net.minecraftforge.fml.common.eventhandler.EventBus$1.invoke(EventBus.java:144)
    at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:182)
    at net.minecraftforge.registries.GameData.fireRegistryEvents(GameData.java:780)
    at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:628)
    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:497)
    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 WayofTime.bloodmagic.item.armour.ItemLivingArmour.<clinit>(ItemLivingArmour.java:60)
    at WayofTime.bloodmagic.core.RegistrarBloodMagicItems.registerItems(RegistrarBloodMagicItems.java:186)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_26_RegistrarBloodMagicItems_registerItems_Register.invoke(.dynamic)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
    at net.minecraftforge.fml.common.eventhandler.EventBus$1.invoke(EventBus.java:144)
    at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:182)
    at net.minecraftforge.registries.GameData.fireRegistryEvents(GameData.java:780)
    at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:628)
    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:497)
    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 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: 406233392 bytes (387 MB) / 805306368 bytes (768 MB) up to 2147483648 bytes (2048 MB)
    JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -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 14 mods loaded, 14 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 |
    | UCH   | forge               | 14.23.5.2768     | forge-1.12.2-14.23.5.2768.jar                   | e3c3d50c7c986df74c645c0ac54639741c90a557 |
    | UCH   | appliedenergistics2 | rv6-stable-6     | appliedenergistics2-rv6-stable-6.jar            | dfa4d3ac143316c6f32aa1a1beda1e34d42132e5 |
    | UCH   | baubles             | 1.5.2            | Baubles-1.12-1.5.2.jar                          | None                                     |
    | UCH   | guideapi            | 1.12-2.1.8-63    | Guide-API-1.12-2.1.8-63.jar                     | None                                     |
    | UCH   | bloodmagic          | 1.12.2-2.4.0-102 | BloodMagic-1.12.2-2.4.0-102 (1).jar             | None                                     |
    | UCH   | chickens            | 6.0.4            | chickens-6.0.4.jar                              | None                                     |
    | UCH   | jei                 | 4.15.0.268       | jei_1.12.2-4.15.0.268.jar                       | None                                     |
    | UCH   | mantle              | 1.12-1.3.3.42    | Mantle-1.12-1.3.3.42.jar                        | None                                     |
    | UCH   | thaumcraft          | 6.1.BETA26       | Thaumcraft-1.12.2-6.1.BETA26 (1).jar            | None                                     |
    | UCH   | twilightforest      | 3.8.689          | twilightforest-1.12.2-3.8.689-universal (1).jar | None                                     |
    | UCH   | tconstruct          | 1.12.2-2.10.1.87 | TConstruct-1.12.2-2.10.1.87.jar                 | None                                     |

    Loaded coremods (and transformers): 
    GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.6.0 NVIDIA 388.13' Renderer: 'GeForce GTX 760/PCIe/SSE2'
    AE2 Version: stable rv6-stable-6 for Forge 14.23.5.2768
    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)

    Launched Version: 1.12.2-forge1.12.2-14.23.5.2768
    LWJGL: 2.9.4
    OpenGL: GeForce GTX 760/PCIe/SSE2 GL version 4.6.0 NVIDIA 388.13, NVIDIA Corporation
    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) i5-4590 CPU @ 3.30GHz

 

Any ideas would be much appreciated.

Blood magic requires a newer forge version than the one you are using.