I'm confused

---- Minecraft Crash Report ----
// I feel sad now :(

Time: 6/6/18 4:36 PM
Description: Initializing game

java.lang.ExceptionInInitializerError
	at com.camellias.voidaicarcania.blocks.BlockAltar.<init>(BlockAltar.java:44)
	at com.camellias.voidaicarcania.init.ModBlocks.<clinit>(ModBlocks.java:42)
	at com.camellias.voidaicarcania.util.handlers.RegistryHandler.onBlockRegister(RegistryHandler.java:41)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_5_RegistryHandler_onBlockRegister_Register.invoke(.dynamic)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
	at net.minecraftforge.fml.common.eventhandler.EventBus$1.invoke(EventBus.java:144)
	at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:182)
	at net.minecraftforge.registries.GameData.fireRegistryEvents(GameData.java:736)
	at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:639)
	at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:270)
	at net.minecraft.client.Minecraft.init(Minecraft.java:513)
	at net.minecraft.client.Minecraft.run(Minecraft.java:421)
	at net.minecraft.client.main.Main.main(Main.java:118)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
	at GradleStart.main(GradleStart.java:25)
Caused by: java.lang.IllegalStateException: Attempted to set registry name with existing registry name! New: active_shield_amulet Old: voidaicarcania:active_shield_amulet
	at net.minecraftforge.registries.IForgeRegistryEntry$Impl.setRegistryName(IForgeRegistryEntry.java:76)
	at com.camellias.voidaicarcania.items.baubles.amulets.ItemShieldAmuletActive.<init>(ItemShieldAmuletActive.java:25)
	at com.camellias.voidaicarcania.init.ModItems.<clinit>(ModItems.java:48)
	... 25 more


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

-- Head --
Thread: Client thread
Stacktrace:
	at com.camellias.voidaicarcania.blocks.BlockAltar.<init>(BlockAltar.java:44)
	at com.camellias.voidaicarcania.init.ModBlocks.<clinit>(ModBlocks.java:42)
	at com.camellias.voidaicarcania.util.handlers.RegistryHandler.onBlockRegister(RegistryHandler.java:41)
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_5_RegistryHandler_onBlockRegister_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:736)
	at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:639)
	at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:270)
	at net.minecraft.client.Minecraft.init(Minecraft.java:513)

-- Initialization --
Details:
Stacktrace:
	at net.minecraft.client.Minecraft.run(Minecraft.java:421)
	at net.minecraft.client.main.Main.main(Main.java:118)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
	at GradleStart.main(GradleStart.java:25)

-- System Details --
Details:
	Minecraft Version: 1.12.2
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_152, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 2926626704 bytes (2791 MB) / 3186360320 bytes (3038 MB) up to 4260102144 bytes (4062 MB)
	JVM Flags: 3 total; -Xincgc -Xmx4G -Xms3G
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: MCP 9.42 Powered by Forge 14.23.3.2678 10 mods loaded, 10 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    | forgeSrc-1.12.2-14.23.3.2678.jar | None      |
	| UCH   | forge          | 14.23.3.2678 | forgeSrc-1.12.2-14.23.3.2678.jar | None      |
	| UCH   | voidaicarcania | 0.3          | bin                              | None      |
	| UCH   | baubles        | 1.5.2        | Baubles-1.12-1.5.2.jar           | None      |
	| UCH   | jei            | 4.9.1.191    | jei_1.12.2-4.9.1.191.jar         | None      |
	| UCH   | journeymap     | 1.12.2-5.5.2 | journeymap-1.12.2-5.5.2.jar      | None      |
	| UCH   | naturescompass | 1.5.1        | NaturesCompass-1.12.2-1.5.1.jar  | None      |
	| UCH   | thaumcraft     | 6.1.BETA13   | Thaumcraft-1.12.2-6.1.BETA13.jar | None      |

	Loaded coremods (and transformers):
	GL info: ' Vendor: 'Intel' Version: '4.4.0 - Build 20.19.15.4463' Renderer: 'Intel(R) HD Graphics 5500'
	Launched Version: 1.12.2
	LWJGL: 2.9.4
	OpenGL: Intel(R) HD Graphics 5500 GL version 4.4.0 - Build 20.19.15.4463, Intel
	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) i5-5200U CPU @ 2.20GHz