I have a NullPointerException but I don’t know where

TokiiWalkie · February 10, 2021

Hello, I am rpetty new in minecraft mod developpment, and I have plenty of errors. I’m trying to develop a block that increments or reduce its PLATFORM_NUMBER integer value.

All was right until I had the last function (when there’s a click , it increments or reduces a value), and when I try to launch my game, it crashes.

Here’s my code :

public class PlatformIndicatorBlock extends Block {

    public  final IntegerProperty PLATFORM_NUMBER = IntegerProperty.create("number", 0, 20);

    public PlatformIndicatorBlock() {
        super(AbstractBlock.Properties.create(Material.CLAY, MaterialColor.LIGHT_BLUE)
                .hardnessAndResistance(2f, 6f)
                .harvestTool(ToolType.PICKAXE)
                .harvestLevel(1)
                .sound(SoundType.STONE));

        this.setDefaultState(this.getDefaultState().with(PLATFORM_NUMBER, 0));
    }

  // I tried to add @Nullable there, but it makes nothing
  
    @Override
    protected void fillStateContainer(@Nullable StateContainer.Builder<Block, BlockState> builder) {
        builder.add(BlockStateProperties.HORIZONTAL_FACING, PLATFORM_NUMBER);
    }

    @Override
    public BlockState getStateForPlacement(BlockItemUseContext ctx) {
        return (BlockState) this.getDefaultState().with(BlockStateProperties.HORIZONTAL_FACING, ctx.getPlacementHorizontalFacing().getOpposite());
    }

    @Override
    public void onBlockClicked(BlockState state, World worldIn, BlockPos pos, PlayerEntity player) {
        if (player.isSneaking()) {

            if (state.get(PLATFORM_NUMBER) == 0) {
                return;
            } else {
                worldIn.setBlockState(pos, state.with(PLATFORM_NUMBER, state.get(PLATFORM_NUMBER) - 1));
            }
        } else {

            if (state.get(PLATFORM_NUMBER) == 0) {
                return;
            } else {
                worldIn.setBlockState(pos, state.with(PLATFORM_NUMBER, state.get(PLATFORM_NUMBER) + 1));
            }
        }
    }
}

Here’s my stacktrace :

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

-- Head --
Thread: Render thread
Stacktrace:
	at net.minecraft.state.StateContainer$Builder.validateProperty(StateContainer.java:126) ~[forge:?] {re:classloading}
-- MOD twlksrailwayproject --
Details:
	Mod File: main
	Failure message: Example Mod (twlksrailwayproject) encountered an error during the load_registries event phase
		java.lang.NullPointerException: null
	Mod Version: 1.0
	Mod Issue URL: NOT PROVIDED
	Exception message: java.lang.NullPointerException
Stacktrace:
	at net.minecraft.state.StateContainer$Builder.validateProperty(StateContainer.java:126) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraft.state.StateContainer$Builder.add(StateContainer.java:118) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at fr.twlk.therailwaysproject.content.blocks.PlatformIndicatorBlock.fillStateContainer(PlatformIndicatorBlock.java:39) ~[main/:?] {re:classloading}
	at net.minecraft.block.Block.<init>(Block.java:162) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B}
	at fr.twlk.therailwaysproject.content.blocks.PlatformIndicatorBlock.<init>(PlatformIndicatorBlock.java:28) ~[main/:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister.lambda$register$0(DeferredRegister.java:124) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister.addEntries(DeferredRegister.java:200) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister.access$000(DeferredRegister.java:61) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister$EventDispatcher.handleEvent(DeferredRegister.java:172) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.eventbus.ASMEventHandler_0_EventDispatcher_handleEvent_Register.invoke(.dynamic) ~[?:?] {}
	at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:85) ~[eventbus-3.0.5-service.jar:?] {}
	at net.minecraftforge.eventbus.EventBus.post(EventBus.java:297) ~[eventbus-3.0.5-service.jar:?] {}
	at net.minecraftforge.fml.javafmlmod.FMLModContainer.acceptEvent(FMLModContainer.java:120) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:35.1] {re:classloading}
	at net.minecraftforge.fml.ModContainer.lambda$buildTransitionHandler$4(ModContainer.java:121) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1640) ~[?:1.8.0_275] {}
	at net.minecraftforge.fml.ModWorkManager$SyncExecutor.driveOne(ModWorkManager.java:56) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModWorkManager$DrivenExecutor.drive(ModWorkManager.java:40) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModLoader.waitForTransition(ModLoader.java:243) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModLoader.dispatchAndHandleError(ModLoader.java:230) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:196) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.client.ClientModLoader.lambda$begin$1(ClientModLoader.java:103) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraftforge.fml.client.ClientModLoader.lambda$createRunnableWithCatch$4(ClientModLoader.java:123) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraftforge.fml.client.ClientModLoader.begin(ClientModLoader.java:103) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.<init>(Minecraft.java:442) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.main.Main.main(Main.java:149) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_275] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_275] {}
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_275] {}
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_275] {}
	at net.minecraftforge.userdev.FMLUserdevClientLaunchProvider.lambda$launchService$0(FMLUserdevClientLaunchProvider.java:52) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.6.jar:?] {}
	at net.minecraftforge.userdev.LaunchTesting.main(LaunchTesting.java:105) [forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {}
      
      
      
      I don’t add the second crash report, because it basically says that my block is not registered, but it is not registered because of this error, so I think when this problem will be recovered it will be ok

So thank you

Draco18s · February 10, 2021

49 minutes ago, TokiiWalkie said:

at fr.twlk.therailwaysproject.content.blocks.PlatformIndicatorBlock.<init>(PlatformIndicatorBlock.java:28) ~[main/:?] {re:classloading}

Line 28 of PlatformIndicatorBlock.

TokiiWalkie · February 15, 2021

Maybe can you help me solving this issue please? It’s been a few days I’m on it, and I cannot solve it

Luis_ST · February 15, 2021

On 2/10/2021 at 4:30 PM, TokiiWalkie said:

this.setDefaultState(this.getDefaultState().with(PLATFORM_NUMBER, 0));

you will set the default state and inside you will get the default state?

use:

this.setDefaultState(this.stateContainer.getBaseState().with(PLATFORM_NUMBER, 0));

I think that's your mistake but I'm not sure because I don't know if it's line 28

TokiiWalkie · February 15, 2021

no it still does not work

Here is the crash report with the stacktraces :

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 15/02/21 19:12
Description: Mod loading error has occurred

java.lang.Exception: Mod Loading has failed
	at net.minecraftforge.fml.CrashReportExtender.dumpModLoadingCrashReport(CrashReportExtender.java:85) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.client.ClientModLoader.completeModLoading(ClientModLoader.java:188) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.lambda$null$1(Minecraft.java:513) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.util.Util.acceptOrElse(Util.java:323) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraft.client.Minecraft.lambda$new$2(Minecraft.java:509) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.gui.ResourceLoadProgressGui.render(ResourceLoadProgressGui.java:113) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.GameRenderer.updateCameraAndRender(GameRenderer.java:492) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1002) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.run(Minecraft.java:612) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.main.Main.main(Main.java:184) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_275] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_275] {}
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_275] {}
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_275] {}
	at net.minecraftforge.userdev.FMLUserdevClientLaunchProvider.lambda$launchService$0(FMLUserdevClientLaunchProvider.java:52) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.6.jar:?] {}
	at net.minecraftforge.userdev.LaunchTesting.main(LaunchTesting.java:105) [forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {}


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

-- Head --
Thread: Render thread
Stacktrace:
	at net.minecraft.state.StateContainer$Builder.validateProperty(StateContainer.java:126) ~[forge:?] {re:classloading}
-- MOD twlksrailwayproject --
Details:
	Mod File: main
	Failure message: Example Mod (twlksrailwayproject) encountered an error during the load_registries event phase
		java.lang.NullPointerException: null
	Mod Version: 1.0
	Mod Issue URL: NOT PROVIDED
	Exception message: java.lang.NullPointerException
Stacktrace:
	at net.minecraft.state.StateContainer$Builder.validateProperty(StateContainer.java:126) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraft.state.StateContainer$Builder.add(StateContainer.java:118) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at fr.twlk.therailwaysproject.content.blocks.PlatformIndicatorBlock.fillStateContainer(PlatformIndicatorBlock.java:40) ~[main/:?] {re:classloading}
	at net.minecraft.block.Block.<init>(Block.java:162) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B}
	at fr.twlk.therailwaysproject.content.blocks.PlatformIndicatorBlock.<init>(PlatformIndicatorBlock.java:29) ~[main/:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister.lambda$register$0(DeferredRegister.java:124) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister.addEntries(DeferredRegister.java:200) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister.access$000(DeferredRegister.java:61) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister$EventDispatcher.handleEvent(DeferredRegister.java:172) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.eventbus.ASMEventHandler_1_EventDispatcher_handleEvent_Register.invoke(.dynamic) ~[?:?] {}
	at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:85) ~[eventbus-3.0.5-service.jar:?] {}
	at net.minecraftforge.eventbus.EventBus.post(EventBus.java:297) ~[eventbus-3.0.5-service.jar:?] {}
	at net.minecraftforge.fml.javafmlmod.FMLModContainer.acceptEvent(FMLModContainer.java:120) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:35.1] {re:classloading}
	at net.minecraftforge.fml.ModContainer.lambda$buildTransitionHandler$4(ModContainer.java:121) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1640) ~[?:1.8.0_275] {}
	at net.minecraftforge.fml.ModWorkManager$SyncExecutor.driveOne(ModWorkManager.java:56) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModWorkManager$DrivenExecutor.drive(ModWorkManager.java:40) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModLoader.waitForTransition(ModLoader.java:243) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModLoader.dispatchAndHandleError(ModLoader.java:230) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:196) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.client.ClientModLoader.lambda$begin$1(ClientModLoader.java:103) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraftforge.fml.client.ClientModLoader.lambda$createRunnableWithCatch$4(ClientModLoader.java:123) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraftforge.fml.client.ClientModLoader.begin(ClientModLoader.java:103) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.<init>(Minecraft.java:442) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.main.Main.main(Main.java:149) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_275] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_275] {}
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_275] {}
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_275] {}
	at net.minecraftforge.userdev.FMLUserdevClientLaunchProvider.lambda$launchService$0(FMLUserdevClientLaunchProvider.java:52) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.6.jar:?] {}
	at net.minecraftforge.userdev.LaunchTesting.main(LaunchTesting.java:105) [forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {}


-- MOD twlksrailwayproject --
Details:
	Mod File: main
	Failure message: Example Mod (twlksrailwayproject) encountered an error during the error event phase
		java.lang.NullPointerException: Registry Object not present: twlksrailwayproject:platform_indicator_block
	Mod Version: 1.0
	Mod Issue URL: NOT PROVIDED
	Exception message: java.lang.NullPointerException: Registry Object not present: twlksrailwayproject:platform_indicator_block
Stacktrace:
	at java.util.Objects.requireNonNull(Objects.java:290) ~[?:1.8.0_275] {}
	at net.minecraftforge.fml.RegistryObject.get(RegistryObject.java:120) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at fr.twlk.therailwaysproject.content.blockitems.PlatformIndicatorBI.<init>(PlatformIndicatorBI.java:11) ~[main/:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister.lambda$register$0(DeferredRegister.java:124) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister.addEntries(DeferredRegister.java:200) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister.access$000(DeferredRegister.java:61) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.registries.DeferredRegister$EventDispatcher.handleEvent(DeferredRegister.java:172) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.eventbus.ASMEventHandler_1_EventDispatcher_handleEvent_Register.invoke(.dynamic) ~[?:?] {}
	at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:85) ~[eventbus-3.0.5-service.jar:?] {}
	at net.minecraftforge.eventbus.EventBus.post(EventBus.java:297) ~[eventbus-3.0.5-service.jar:?] {}
	at net.minecraftforge.fml.javafmlmod.FMLModContainer.acceptEvent(FMLModContainer.java:120) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:35.1] {re:classloading}
	at net.minecraftforge.fml.ModContainer.lambda$buildTransitionHandler$4(ModContainer.java:121) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1640) ~[?:1.8.0_275] {}
	at net.minecraftforge.fml.ModWorkManager$SyncExecutor.driveOne(ModWorkManager.java:56) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModWorkManager$DrivenExecutor.drive(ModWorkManager.java:40) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModLoader.waitForTransition(ModLoader.java:243) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModLoader.dispatchAndHandleError(ModLoader.java:230) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.ModLoader.gatherAndInitializeMods(ModLoader.java:196) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading}
	at net.minecraftforge.fml.client.ClientModLoader.lambda$begin$1(ClientModLoader.java:103) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraftforge.fml.client.ClientModLoader.lambda$createRunnableWithCatch$4(ClientModLoader.java:123) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraftforge.fml.client.ClientModLoader.begin(ClientModLoader.java:103) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.<init>(Minecraft.java:442) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.main.Main.main(Main.java:149) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_275] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_275] {}
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_275] {}
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_275] {}
	at net.minecraftforge.userdev.FMLUserdevClientLaunchProvider.lambda$launchService$0(FMLUserdevClientLaunchProvider.java:52) ~[forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.6.jar:?] {}
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.6.jar:?] {}
	at net.minecraftforge.userdev.LaunchTesting.main(LaunchTesting.java:105) [forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-recomp.jar:?] {}


-- System Details --
Details:
	Minecraft Version: 1.16.4
	Minecraft Version ID: 1.16.4
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_275, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 644838512 bytes (614 MB) / 990380032 bytes (944 MB) up to 1881145344 bytes (1794 MB)
	CPUs: 4
	JVM Flags: 1 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump
	ModLauncher: 8.0.6+85+master.325de55
	ModLauncher launch target: fmluserdevclient
	ModLauncher naming: mcp
	ModLauncher services: 
		/mixin-0.8.2.jar mixin PLUGINSERVICE 
		/eventbus-3.0.5-service.jar eventbus PLUGINSERVICE 
		/forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-launcher.jar object_holder_definalize PLUGINSERVICE 
		/forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-launcher.jar runtime_enum_extender PLUGINSERVICE 
		/accesstransformers-2.2.0-shadowed.jar accesstransformer PLUGINSERVICE 
		/forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-launcher.jar capability_inject_definalize PLUGINSERVICE 
		/forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-launcher.jar runtimedistcleaner PLUGINSERVICE 
		/mixin-0.8.2.jar mixin TRANSFORMATIONSERVICE 
		/forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.3-launcher.jar fml TRANSFORMATIONSERVICE 
	FML: 35.1
	Forge: net.minecraftforge:35.1.4
	FML Language Providers: 
		[email protected]
		minecraft@1
	Mod List: 
		client-extra.jar                                  |Minecraft                     |minecraft                     |1.16.4              |COMMON_SET|a1:d4:5e:04:4f:d3:d6:e0:7b:37:97:cf:77:b0:de:ad:4a:47:ce:8c:96:49:5f:0a:cf:8c:ae:b2:6d:4b:8a:3f
		main                                              |Example Mod                   |twlksrailwayproject           |1.0                 |VALIDATE  |NOSIGNATURE
		forge-1.16.4-35.1.4_mapped_snapshot_20201028-1.16.|Forge                         |forge                         |35.1.4              |COMMON_SET|NOSIGNATURE
	Crash Report UUID: d325270f-0e84-46e3-b32f-23f36a737935

TokiiWalkie · February 15, 2021

Here is my code, I have done what Luis said, but nothing. I have also changed "AbstractBlock.Properties" to "Block.Properties", since I’m extending Block and not AbstractBlock.

package fr.twlk.therailwaysproject.content.blocks;

import net.minecraft.block.AbstractBlock;
import net.minecraft.block.Block;
import net.minecraft.block.BlockState;
import net.minecraft.block.SoundType;
import net.minecraft.block.material.Material;
import net.minecraft.block.material.MaterialColor;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.item.BlockItemUseContext;
import net.minecraft.state.IntegerProperty;
import net.minecraft.state.Property;
import net.minecraft.state.StateContainer;
import net.minecraft.state.properties.BlockStateProperties;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.Direction;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.IBlockReader;
import net.minecraft.world.World;
import net.minecraftforge.common.ToolType;

import javax.annotation.Nullable;

public class PlatformIndicatorBlock extends Block {

    public  final IntegerProperty PLATFORM_NUMBER = IntegerProperty.create("number", 0, 20);

    public PlatformIndicatorBlock() {
      // Line 29  
      super(Block.Properties.create(Material.CLAY, MaterialColor.LIGHT_BLUE)
                .hardnessAndResistance(2f, 6f)
                .harvestTool(ToolType.PICKAXE)
                .harvestLevel(1)
                .sound(SoundType.STONE));

        this.setDefaultState(this.stateContainer.getBaseState().with(PLATFORM_NUMBER, 0));
    }

    @Override
    protected void fillStateContainer(@Nullable StateContainer.Builder<Block, BlockState> builder) {
	// Line 40
      builder.add(PLATFORM_NUMBER, BlockStateProperties.HORIZONTAL_FACING);
    }

    @Override
    public BlockState getStateForPlacement(BlockItemUseContext ctx) {
        return (BlockState) this.getDefaultState().with(BlockStateProperties.HORIZONTAL_FACING, ctx.getPlacementHorizontalFacing().getOpposite());
    }

    @Override
    public void onBlockClicked(BlockState state, World worldIn, BlockPos pos, PlayerEntity player) {
        if (player.isSneaking()) {
            if (state.get(PLATFORM_NUMBER) == 0) {
                return;
            } else {
                worldIn.setBlockState(pos, state.with(PLATFORM_NUMBER, state.get(PLATFORM_NUMBER) - 1));
            }
        } else {
            if (state.get(PLATFORM_NUMBER) == 0) {
                return;
            } else {
                worldIn.setBlockState(pos, state.with(PLATFORM_NUMBER, state.get(PLATFORM_NUMBER) + 1));
            }
        }
    }
}

The crash report is the same

Luis_ST · February 15, 2021

8 minutes ago, TokiiWalkie said:

The crash report is the same

store the facing in a field and add it to setDefaultState

beacuse you add it to stateContainer but you never set the base facing so minecraft dont know how to set the block

this is the last mistake that it could be and that I find in your code

i try to create your block in my mod and see if it works

TokiiWalkie · February 15, 2021

So it does not crash anymore, so thank you

A last question : When I click on the block, I cannot interract with it, so do I need to add a tileentity?

Edited February 15, 2021 by TokiiWalkie
Typing mistake

Luis_ST · February 15, 2021

2 minutes ago, TokiiWalkie said:

A last question : When I click on the block, I cannot interract with it, so do I need to add a tileentity?

use onBlockActivated instead of onBlockClicked

Sign In

I have a NullPointerException but I don’t know where

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