[1.19.3] Problems with Custom OreGen and PlacedFeature

[Infinituum]

I was following some tutorials on yt and noticed that a lot has changed from 1.19.2 to 1.19.3. My IDE doesn't show me any error but when I try to load the game the error I get is:

Spoiler

java.lang.RuntimeException: null
    at net.minecraftforge.registries.GameData.postRegisterEvents(GameData.java:355) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading}
    at net.minecraftforge.common.ForgeStatesProvider.lambda$new$4(ForgeStatesProvider.java:25) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading}
    at net.minecraftforge.fml.ModLoader.lambda$dispatchAndHandleError$23(ModLoader.java:201) ~[fmlcore-1.19.3-44.0.41.jar:?] {}
    at java.util.Optional.ifPresent(Optional.java:178) ~[?:?] {}
    at net.minecraftforge.fml.ModLoader.dispatchAndHandleError(ModLoader.java:201) ~[fmlcore-1.19.3-44.0.41.jar:?] {}
    at net.minecraftforge.fml.ModLoader.lambda$gatherAndInitializeMods$14(ModLoader.java:179) ~[fmlcore-1.19.3-44.0.41.jar:?] {}
    at java.lang.Iterable.forEach(Iterable.java:75) ~[?:?] {}
    at net.minecraftforge.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:179) ~[fmlcore-1.19.3-44.0.41.jar:?] {}
    at net.minecraftforge.client.loading.ClientModLoader.lambda$begin$1(ClientModLoader.java:91) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraftforge.client.loading.ClientModLoader.lambda$createRunnableWithCatch$4(ClientModLoader.java:111) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraftforge.client.loading.ClientModLoader.begin(ClientModLoader.java:91) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.<init>(Minecraft.java:474) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.main.Main.run(Main.java:176) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.main.Main.main(Main.java:51) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?] {}
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] {}
    at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?] {}
    at net.minecraftforge.fml.loading.targets.ForgeClientUserdevLaunchHandler.lambda$launchService$0(ForgeClientUserdevLaunchHandler.java:25) ~[fmlloader-1.19.3-44.0.41.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) ~[modlauncher-10.0.8.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) ~[modlauncher-10.0.8.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) ~[modlauncher-10.0.8.jar:?] {}
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:106) ~[modlauncher-10.0.8.jar:?] {}
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:77) ~[modlauncher-10.0.8.jar:?] {}
    at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.8.jar:?] {}
    at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) ~[modlauncher-10.0.8.jar:?] {}
    at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) ~[bootstraplauncher-1.1.2.jar:?] {}
    Suppressed: java.lang.RuntimeException: Failed to apply some object holders, see suppressed exceptions for details
        at net.minecraftforge.registries.ObjectHolderRegistry.applyObjectHolders(ObjectHolderRegistry.java:225) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading}
        at net.minecraftforge.registries.GameData.postRegisterEvents(GameData.java:375) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading}
        at net.minecraftforge.common.ForgeStatesProvider.lambda$new$4(ForgeStatesProvider.java:25) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading}
        at net.minecraftforge.fml.ModLoader.lambda$dispatchAndHandleError$23(ModLoader.java:201) ~[fmlcore-1.19.3-44.0.41.jar:?] {}
        at java.util.Optional.ifPresent(Optional.java:178) ~[?:?] {}
        at net.minecraftforge.fml.ModLoader.dispatchAndHandleError(ModLoader.java:201) ~[fmlcore-1.19.3-44.0.41.jar:?] {}
        at net.minecraftforge.fml.ModLoader.lambda$gatherAndInitializeMods$14(ModLoader.java:179) ~[fmlcore-1.19.3-44.0.41.jar:?] {}
        at java.lang.Iterable.forEach(Iterable.java:75) ~[?:?] {}
        at net.minecraftforge.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:179) ~[fmlcore-1.19.3-44.0.41.jar:?] {}
        at net.minecraftforge.client.loading.ClientModLoader.lambda$begin$1(ClientModLoader.java:91) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
        at net.minecraftforge.client.loading.ClientModLoader.lambda$createRunnableWithCatch$4(ClientModLoader.java:111) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
        at net.minecraftforge.client.loading.ClientModLoader.begin(ClientModLoader.java:91) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
        at net.minecraft.client.Minecraft.<init>(Minecraft.java:474) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
        at net.minecraft.client.main.Main.run(Main.java:176) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
        at net.minecraft.client.main.Main.main(Main.java:51) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?] {}
        at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] {}
        at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?] {}
        at net.minecraftforge.fml.loading.targets.ForgeClientUserdevLaunchHandler.lambda$launchService$0(ForgeClientUserdevLaunchHandler.java:25) ~[fmlloader-1.19.3-44.0.41.jar:?] {}
        at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) ~[modlauncher-10.0.8.jar:?] {}
        at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) ~[modlauncher-10.0.8.jar:?] {}
        at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) ~[modlauncher-10.0.8.jar:?] {}
        at cpw.mods.modlauncher.Launcher.run(Launcher.java:106) ~[modlauncher-10.0.8.jar:?] {}
        at cpw.mods.modlauncher.Launcher.main(Launcher.java:77) ~[modlauncher-10.0.8.jar:?] {}
        at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.8.jar:?] {}
        at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) ~[modlauncher-10.0.8.jar:?] {}
        at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) ~[bootstraplauncher-1.1.2.jar:?] {}
        Suppressed: java.lang.IllegalStateException: Unable to find registry with key minecraft:worldgen/placed_feature for mod "examplemod". Check the 'caused by' to see further stack.
            at net.minecraftforge.registries.RegistryObject$1.accept(RegistryObject.java:178) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading}
            at net.minecraftforge.registries.RegistryObject$1.accept(RegistryObject.java:164) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading}
            at net.minecraftforge.registries.ObjectHolderRegistry.lambda$applyObjectHolders$8(ObjectHolderRegistry.java:229) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading}
            at java.lang.Iterable.forEach(Iterable.java:75) ~[?:?] {}
            at net.minecraftforge.registries.ObjectHolderRegistry.applyObjectHolders(ObjectHolderRegistry.java:226) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading}
            at net.minecraftforge.registries.GameData.postRegisterEvents(GameData.java:375) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading}
            at net.minecraftforge.common.ForgeStatesProvider.lambda$new$4(ForgeStatesProvider.java:25) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading}
            at net.minecraftforge.fml.ModLoader.lambda$dispatchAndHandleError$23(ModLoader.java:201) ~[fmlcore-1.19.3-44.0.41.jar:?] {}
            at java.util.Optional.ifPresent(Optional.java:178) ~[?:?] {}
            at net.minecraftforge.fml.ModLoader.dispatchAndHandleError(ModLoader.java:201) ~[fmlcore-1.19.3-44.0.41.jar:?] {}
            at net.minecraftforge.fml.ModLoader.lambda$gatherAndInitializeMods$14(ModLoader.java:179) ~[fmlcore-1.19.3-44.0.41.jar:?] {}
            at java.lang.Iterable.forEach(Iterable.java:75) ~[?:?] {}
            at net.minecraftforge.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:179) ~[fmlcore-1.19.3-44.0.41.jar:?] {}
            at net.minecraftforge.client.loading.ClientModLoader.lambda$begin$1(ClientModLoader.java:91) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
            at net.minecraftforge.client.loading.ClientModLoader.lambda$createRunnableWithCatch$4(ClientModLoader.java:111) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
            at net.minecraftforge.client.loading.ClientModLoader.begin(ClientModLoader.java:91) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
            at net.minecraft.client.Minecraft.<init>(Minecraft.java:474) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
            at net.minecraft.client.main.Main.run(Main.java:176) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
            at net.minecraft.client.main.Main.main(Main.java:51) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3.jar:?] {re:classloading,pl:runtimedistcleaner:A}
            at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] {}
            at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?] {}
            at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] {}
            at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?] {}
            at net.minecraftforge.fml.loading.targets.ForgeClientUserdevLaunchHandler.lambda$launchService$0(ForgeClientUserdevLaunchHandler.java:25) ~[fmlloader-1.19.3-44.0.41.jar:?] {}
            at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) ~[modlauncher-10.0.8.jar:?] {}
            at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) ~[modlauncher-10.0.8.jar:?] {}
            at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) ~[modlauncher-10.0.8.jar:?] {}
            at cpw.mods.modlauncher.Launcher.run(Launcher.java:106) ~[modlauncher-10.0.8.jar:?] {}
            at cpw.mods.modlauncher.Launcher.main(Launcher.java:77) ~[modlauncher-10.0.8.jar:?] {}
            at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) ~[modlauncher-10.0.8.jar:?] {}
            at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) ~[modlauncher-10.0.8.jar:?] {}
            at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) ~[bootstraplauncher-1.1.2.jar:?] {}
        Caused by: java.lang.Throwable: Calling Site from mod: examplemod
            at net.minecraftforge.registries.RegistryObject.<init>(RegistryObject.java:162) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3-recomp.jar%23185%23192!/:?] {re:classloading}
            at net.minecraftforge.registries.RegistryObject.create(RegistryObject.java:64) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3-recomp.jar%23185%23192!/:?] {re:classloading}
            at net.minecraftforge.registries.DeferredRegister.register(DeferredRegister.java:187) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3-recomp.jar%23185%23192!/:?] {re:classloading}
            at com.infinituum.examplemod.init.Registration.<clinit>(Registration.java:87) ~[%23191!/:?] {re:classloading}
            at com.infinituum.examplemod.ExampleMod.<init>(ExampleMod.java:25) ~[%23191!/:?] {re:classloading}
            at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?] {}
            at jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77) ~[?:?] {}
            at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?] {}
            at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?] {}
            at java.lang.reflect.Constructor.newInstance(Constructor.java:480) ~[?:?] {}
            at net.minecraftforge.fml.javafmlmod.FMLModContainer.constructMod(FMLModContainer.java:68) ~[javafmllanguage-1.19.3-44.0.41.jar%23187!/:?] {}
            at net.minecraftforge.fml.ModContainer.lambda$buildTransitionHandler$10(ModContainer.java:121) ~[fmlcore-1.19.3-44.0.41.jar%23190!/:?] {}
            at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804) ~[?:?] {}
            at java.util.concurrent.CompletableFuture$AsyncRun.exec(CompletableFuture.java:1796) ~[?:?] {}
            at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:373) ~[?:?] {}
            at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1182) ~[?:?] {}
            at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1655) ~[?:?] {}
            at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1622) ~[?:?] {}
            at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:165) ~[?:?] {}

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

-- Head --
Thread: Render thread
Stacktrace:
    at net.minecraftforge.registries.GameData.postRegisterEvents(GameData.java:355) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3-recomp.jar%23185%23192!/:?] {re:classloading}
    at net.minecraftforge.common.ForgeStatesProvider.lambda$new$4(ForgeStatesProvider.java:25) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3-recomp.jar%23185%23192!/:?] {re:classloading}
    at net.minecraftforge.fml.ModLoader.lambda$dispatchAndHandleError$23(ModLoader.java:201) ~[fmlcore-1.19.3-44.0.41.jar%23190!/:?] {}
    at java.util.Optional.ifPresent(Optional.java:178) ~[?:?] {}
    at net.minecraftforge.fml.ModLoader.dispatchAndHandleError(ModLoader.java:201) ~[fmlcore-1.19.3-44.0.41.jar%23190!/:?] {}
    at net.minecraftforge.fml.ModLoader.lambda$gatherAndInitializeMods$14(ModLoader.java:179) ~[fmlcore-1.19.3-44.0.41.jar%23190!/:?] {}
    at java.lang.Iterable.forEach(Iterable.java:75) ~[?:?] {}
    at net.minecraftforge.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:179) ~[fmlcore-1.19.3-44.0.41.jar%23190!/:?] {}
    at net.minecraftforge.client.loading.ClientModLoader.lambda$begin$1(ClientModLoader.java:91) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3-recomp.jar%23185%23192!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraftforge.client.loading.ClientModLoader.lambda$createRunnableWithCatch$4(ClientModLoader.java:111) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3-recomp.jar%23185%23192!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraftforge.client.loading.ClientModLoader.begin(ClientModLoader.java:91) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3-recomp.jar%23185%23192!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.<init>(Minecraft.java:474) ~[forge-1.19.3-44.0.41_mapped_parchment_2022.12.18-1.19.3-recomp.jar%23186!/:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}

Registration.java:

public class Registration {
    private Registration() {}

    private static final DeferredRegister<Block> BLOCKS = DeferredRegister.create(ForgeRegistries.BLOCKS, MODID);
    private static final DeferredRegister<BlockEntityType<?>> BLOCK_ENTITIES = DeferredRegister.create(ForgeRegistries.BLOCK_ENTITY_TYPES, MODID);
    private static final DeferredRegister<Item> ITEMS = DeferredRegister.create(ForgeRegistries.ITEMS, MODID);
    private static final DeferredRegister<Codec<? extends IGlobalLootModifier>> GLM = DeferredRegister.create(ForgeRegistries.Keys.GLOBAL_LOOT_MODIFIER_SERIALIZERS, MODID);
    private static final DeferredRegister<MenuType<?>> CONTAINERS = DeferredRegister.create(ForgeRegistries.MENU_TYPES, MODID);
    private static final DeferredRegister<PlacedFeature> PLACED_FEATURES = DeferredRegister.create(Registries.PLACED_FEATURE, MODID);

    public static final RegistryObject<Block> EXAMPLE_BLOCK = BLOCKS.register("example_block", () -> new Block(BlockBehaviour.Properties.of(Material.STONE).requiresCorrectToolForDrops()));
    public static final RegistryObject<Block> EXAMPLE_CARROT_CROP = BLOCKS.register("example_carrot_crop", () -> new ExCarrotCropBlock(BlockBehaviour.Properties.of(Material.PLANT).noCollission().randomTicks().instabreak().sound(SoundType.CROP).noOcclusion()));
    public static final RegistryObject<Block> EXAMPLE_ORE = BLOCKS.register("example_ore", () -> new Block(BlockBehaviour.Properties.of(Material.STONE).requiresCorrectToolForDrops().strength(2.0f)));
    public static final RegistryObject<Block> DEEPSLATE_EXAMPLE_ORE = BLOCKS.register("deepslate_example_ore", () -> new Block(BlockBehaviour.Properties.of(Material.STONE).requiresCorrectToolForDrops().strength(2.0f)));
    public static final RegistryObject<Block> EXAMPLE_ADVANCED_BLOCK = BLOCKS.register("example_advanced_block", ExampleAdvancedBlock::new);

    public static final RegistryObject<BlockEntityType<ExampleAdvancedBlockEntity>> EXAMPLE_ADVANCED_BLOCK_ENTITY = BLOCK_ENTITIES.register("example_advanced_block_entity", () -> BlockEntityType.Builder.of(ExampleAdvancedBlockEntity::new, EXAMPLE_ADVANCED_BLOCK.get()).build(null));

    public static final RegistryObject<Item> EXAMPLE_INGOT = ITEMS.register("example_ingot", () -> new Item(new Item.Properties()));
    public static final RegistryObject<Item> EXAMPLE_FOOD = ITEMS.register("example_food", () -> new Item(new Item.Properties().food(new FoodProperties.Builder().nutrition(6).saturationMod(0.6F).build())));
    public static final RegistryObject<Item> EXAMPLE_CARROT = ITEMS.register("example_carrot", () -> new BlockItem(EXAMPLE_CARROT_CROP.get(), new Item.Properties().food(new FoodProperties.Builder().nutrition(6).saturationMod(0.6F).build())));
    public static final RegistryObject<Item> EXAMPLE_PICKAXE = ITEMS.register("example_pickaxe", () -> new PickaxeItem(new ExampleToolTier(), 0, 0, new Item.Properties().stacksTo(1)));
    public static final RegistryObject<Item> EXAMPLE_BLOCK_ITEM = ITEMS.register("example_block", () -> new BlockItem(EXAMPLE_BLOCK.get(), new Item.Properties()));
    public static final RegistryObject<Item> EXAMPLE_ADVANCED_BLOCK_ITEM = ITEMS.register("example_advanced_block", () -> new BlockItem(EXAMPLE_ADVANCED_BLOCK.get(), new Item.Properties()));
    public static final RegistryObject<Item> EXAMPLE_ORE_ITEM = ITEMS.register("example_ore", () -> new BlockItem(EXAMPLE_ORE.get(), new Item.Properties()));
    public static final RegistryObject<Item> DEEPSLATE_EXAMPLE_ORE_ITEM = ITEMS.register("deepslate_example_ore", () -> new BlockItem(DEEPSLATE_EXAMPLE_ORE.get(), new Item.Properties()));
    public static final RegistryObject<Item> RAW_EXAMPLE_ORE = ITEMS.register("raw_example_ore", () -> new Item(new Item.Properties()));

    public static final RegistryObject<Codec<GrassLootModifier>> GRASS_MOD = GLM.register("grass", GrassLootModifier.CODEC);

    public static final RegistryObject<MenuType<ExampleAdvancedBlockMenu>> EXAMPLE_ADVANCED_BLOCK_CONTAINER = CONTAINERS.register("example_advanced_block_container", () -> IForgeMenuType.create((id, inv, data) -> new ExampleAdvancedBlockMenu(id, data.readBlockPos(), inv, inv.player)));

    public static final Supplier<List<OreConfiguration.TargetBlockState>> OVERWORLD_EXAMPLE_ORE = Suppliers.memoize(() -> List.of(
            OreConfiguration.target(new TagMatchTest(BlockTags.STONE_ORE_REPLACEABLES), EXAMPLE_ORE.get().defaultBlockState()),
            OreConfiguration.target(new TagMatchTest(BlockTags.DEEPSLATE_ORE_REPLACEABLES), DEEPSLATE_EXAMPLE_ORE.get().defaultBlockState())
    ));

    public static final RegistryObject<PlacedFeature> EXAMPLE_ORE_PLACED =
            PLACED_FEATURES.register("example_ore_placed",
                    () -> new PlacedFeature(Holder.direct(new ConfiguredFeature<>(Feature.ORE, new OreConfiguration(OVERWORLD_EXAMPLE_ORE.get(), 7))),
                            CustomOrePlacements.commonOrePlacement(7,
                                    HeightRangePlacement.triangle(
                                            VerticalAnchor.aboveBottom(-80),
                                            VerticalAnchor.aboveBottom(80)
                                    )
                            )
                    )
            );


    public static void init() {
        IEventBus bus = FMLJavaModLoadingContext.get().getModEventBus();

        BLOCKS.register(bus);
        BLOCK_ENTITIES.register(bus);
        ITEMS.register(bus);
        GLM.register(bus);
        CONTAINERS.register(bus);

        PLACED_FEATURES.register(bus);
    }
}

The method `init` is called directly from the ExampleMod constructor (main entry point of the mod).

The `CustomOrePlacements` class is basically a copy of some of the private methods from the `OrePlacements` class.

 

I've already placed a json file inside `resources/data/examplemod/forge/biome_modifier`:

{
  "type": "forge:add_features",
  "biomes": "#minecraft:is_overworld",
  "features": "examplemod:example_ore_placed",
  "step": "underground_ores"
}

I was wondering if someone could explain what's wrong with the code and how to fix this problem.

Edited December 28, 2022 by Infinituum

[ChampionAsh5357]

You can no longer add dynamic registry objects in code, they must be JSON files. However, you can transfer the JSON over to a data provider and have it generate the file for you.

[Infinituum]

Oh thanks, I wasn't totally understanding what was going on but now I think I can fix it. Thank you so much