這樣寫的為什么會報錯

---- Minecraft Crash Report ----

// I let you down. Sorry :(

Time: 2023-06-03 03:16:06

Description: Initializing game

java.lang.RuntimeException: Could not execute entrypoint stage 'main' due to errors, provided by 'copper_tools'!

at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.lambda$invoke0$0(EntrypointUtils.java:51)

at net.fabricmc.loader.impl.util.ExceptionUtil.gatherExceptions(ExceptionUtil.java:33)

at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke0(EntrypointUtils.java:49)

at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke(EntrypointUtils.java:35)

at net.fabricmc.loader.impl.game.minecraft.Hooks.startClient(Hooks.java:52)

at net.minecraft.client.MinecraftClient.<init>(MinecraftClient.java:526)

at net.minecraft.client.main.Main.main(Main.java:178)

at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:462)

at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74)

at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)

at net.fabricmc.devlaunchinjector.Main.main(Main.java:86)

Suppressed: net.fabricmc.loader.api.EntrypointException: Exception while loading entries for entrypoint 'main' provided by 'copper_tools'

at net.fabricmc.loader.impl.entrypoint.EntrypointContainerImpl.getEntrypoint(EntrypointContainerImpl.java:56)

at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke0(EntrypointUtils.java:47)

... 8 more

Caused by: net.fabricmc.loader.api.LanguageAdapterException: Class com.xxy.tools.RedDiamondToolMaterial cannot be cast to net.fabricmc.api.ModInitializer!

at net.fabricmc.loader.impl.util.DefaultLanguageAdapter.create(DefaultLanguageAdapter.java:63)

at net.fabricmc.loader.impl.entrypoint.EntrypointStorage$NewEntry.getOrCreate(EntrypointStorage.java:117)

at net.fabricmc.loader.impl.entrypoint.EntrypointContainerImpl.getEntrypoint(EntrypointContainerImpl.java:53)

... 9 more

Caused by: net.fabricmc.loader.api.EntrypointException: Exception while loading entries for entrypoint 'main' provided by 'copper_tools'

at net.fabricmc.loader.impl.entrypoint.EntrypointContainerImpl.getEntrypoint(EntrypointContainerImpl.java:56)

at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke0(EntrypointUtils.java:47)

... 8 more

Caused by: net.fabricmc.loader.api.LanguageAdapterException: Class com.xxy.tools.RedDiamondSword cannot be cast to net.fabricmc.api.ModInitializer!

at net.fabricmc.loader.impl.util.DefaultLanguageAdapter.create(DefaultLanguageAdapter.java:63)

at net.fabricmc.loader.impl.entrypoint.EntrypointStorage$NewEntry.getOrCreate(EntrypointStorage.java:117)

at net.fabricmc.loader.impl.entrypoint.EntrypointContainerImpl.getEntrypoint(EntrypointContainerImpl.java:53)

... 9 more

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

---------------------------------------------------------------------------------------

-- Head --

Thread: Render thread

Stacktrace:

at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.lambda$invoke0$0(EntrypointUtils.java:51)

at net.fabricmc.loader.impl.util.ExceptionUtil.gatherExceptions(ExceptionUtil.java:33)

at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke0(EntrypointUtils.java:49)

at net.fabricmc.loader.impl.entrypoint.EntrypointUtils.invoke(EntrypointUtils.java:35)

at net.fabricmc.loader.impl.game.minecraft.Hooks.startClient(Hooks.java:52)

at net.minecraft.client.MinecraftClient.<init>(MinecraftClient.java:526)