LibRMX

how? i have the 1.12.2 mdk? So it should work. Because forge is 1.12.2, and my mdk also

Hey, I have a problem with my Custom Sword. Idk why it is happening, but here: My Code Main Class: package com.example.examplemod; import org.apache.logging.log4j.Logger; import net.minecraft.init.Blocks; import net.minecraft.item.Item.ToolMaterial; import net.minecraft.item.ItemSword; import net.minecraftforge.common.util.EnumHelper; import net.minecraftforge.fml.common.Mod; import net.minecraftforge.fml.common.Mod.EventHandler; import net.minecraftforge.fml.common.event.FMLInitializationEvent; import net.minecraftforge.fml.common.event.FMLPreInitializationEvent; @Mod(modid = ExampleMod.MODID, name = ExampleMod.NAME, version = ExampleMod.VERSION) public class ExampleMod { public static final String MODID = "sword"; public static final String NAME = "Sword Test"; public static final String VERSION = "1.0"; public static ToolMaterial myToolMaterial; public static ItemSword mySword; private static Logger logger; @EventHandler public void preInit(FMLPreInitializationEvent event) { logger = event.getModLog(); myToolMaterial = EnumHelper.addToolMaterial("Sapphire Sword", 4, 10000, 20.0F, 50000.0F, 30); mySword = new CustomSword(); } @EventHandler public void init(FMLInitializationEvent event) { // some example code logger.info("DIRT BLOCK >> {}", Blocks.DIRT.getRegistryName()); } } my CustomSword() Class: package com.example.examplemod; import net.minecraft.creativetab.CreativeTabs; import net.minecraft.item.ItemSword; public class CustomSword extends ItemSword { public CustomSword() { super(ExampleMod.myToolMaterial); this.setRegistryName("my_sword"); this.setUnlocalizedName("my_sword"); this.setCreativeTab(CreativeTabs.COMBAT); } } My CommonProxy Class: package com.example.examplemod; import net.minecraft.item.Item; import net.minecraftforge.event.RegistryEvent; import net.minecraftforge.fml.common.Mod; import net.minecraftforge.fml.common.eventhandler.SubscribeEvent; @Mod.EventBusSubscriber public class CommonProxy { @SubscribeEvent public static void registerItems(RegistryEvent.Register<Item> event) { event.getRegistry().registerAll(ExampleMod.mySword); } } The Error: [23:03:28] [Server thread/ERROR] [minecraft/MinecraftServer]: Encountered an unexpected exception net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Sword Test (sword) Caused by: java.lang.NoSuchMethodError: com.example.examplemod.CustomSword.setUnlocalizedName(Ljava/lang/String;)Lnet/minecraft/item/Item; at com.example.examplemod.CustomSword.<init>(CustomSword.java:11) ~[CustomSword.class:?] at com.example.examplemod.ExampleMod.preInit(ExampleMod.java:35) ~[ExampleMod.class:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_261] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_261] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_261] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_261] at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:637) ~[forge.jar:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_261] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_261] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_261] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_261] at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91) ~[minecraft_server.1.12.2.jar:?] at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150) ~[minecraft_server.1.12.2.jar:?] at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76) ~[minecraft_server.1.12.2.jar:?] at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399) ~[minecraft_server.1.12.2.jar:?] at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71) ~[minecraft_server.1.12.2.jar:?] at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116) ~[minecraft_server.1.12.2.jar:?] at com.google.common.eventbus.EventBus.post(EventBus.java:217) ~[minecraft_server.1.12.2.jar:?] at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:219) ~[forge.jar:?] at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:197) ~[forge.jar:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_261] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_261] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_261] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_261] at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91) ~[minecraft_server.1.12.2.jar:?] at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150) ~[minecraft_server.1.12.2.jar:?] at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76) ~[minecraft_server.1.12.2.jar:?] at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399) ~[minecraft_server.1.12.2.jar:?] at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71) ~[minecraft_server.1.12.2.jar:?] at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116) ~[minecraft_server.1.12.2.jar:?] at com.google.common.eventbus.EventBus.post(EventBus.java:217) ~[minecraft_server.1.12.2.jar:?] at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:136) ~[LoadController.class:?] at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:629) ~[Loader.class:?] at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:99) ~[FMLServerHandler.class:?] at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:333) ~[FMLCommonHandler.class:?] at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:125) ~[nz.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486) [MinecraftServer.class:?] at java.lang.Thread.run(Unknown Source) [?:1.8.0_261] [23:03:29] [Server thread/ERROR] [minecraft/MinecraftServer]: This crash report has been saved to: C:\Users\LibRMXWin10\Desktop\Forge Server\.\crash-reports\crash-2020-07-22_23.03.29-server.txt [23:03:29] [Server thread/INFO] [minecraft/MinecraftServer]: Stopping server [23:03:29] [Server thread/INFO] [minecraft/MinecraftServer]: Saving worlds [23:03:29] [Server thread/INFO] [FML]: The state engine was in incorrect state INITIALIZATION and forced into state SERVER_STOPPED. Errors may have been discarded. [23:03:29] [Server Shutdown Thread/INFO] [minecraft/MinecraftServer]: Stopping server [23:03:29] [Forge Version Check/INFO] [forge.VersionCheck]: [forge] Found status: UP_TO_DATE Target: null [23:03:29] [Server Shutdown Thread/INFO] [minecraft/MinecraftServer]: Saving worlds Idk why that is happening. It says SetUnlocalizedName is not a method and CreativeTabs.COMBAT isnt a thing even if i have imported it. I followed a 1.12.2 Tutorial and my Mod is 1.12.2