Hi, I'm trying to create custom datapack support for my 5x5 workbench. But when I add a json file to: 'resourses > data > jobsplus (modid) > custom_recipes' and I load a world, it says I need to try safe mode and gives me te following error:

P.S. when I remove the file in 'custom_recipes' or when I comment out the line in 'EventAddReloadListener':

event.addListener(ModRecipeManager.instance);

The world loads without a problem.

 

Spoiler

[13:34:33] [Render thread/WARN] [minecraft/WorldOpenFlows]: Failed to load datapacks, can't proceed with server load
java.util.concurrent.ExecutionException: java.lang.NullPointerException: Cannot invoke "com.google.gson.Gson.getAdapter(java.lang.Class)" because "p_13781_" is null
    at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:396) ~[?:?] {}
    at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2073) ~[?:?] {}
    at net.minecraft.client.gui.screens.worldselection.WorldOpenFlows.loadWorldStem(WorldOpenFlows.java:131) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.screens.worldselection.WorldOpenFlows.loadWorldStem(WorldOpenFlows.java:109) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.screens.worldselection.WorldOpenFlows.doLoadLevel(WorldOpenFlows.java:148) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.screens.worldselection.WorldOpenFlows.doLoadLevel(WorldOpenFlows.java:136) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.screens.worldselection.WorldOpenFlows.loadLevel(WorldOpenFlows.java:58) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.screens.worldselection.WorldSelectionList$WorldListEntry.loadWorld(WorldSelectionList.java:586) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.screens.worldselection.WorldSelectionList$WorldListEntry.joinWorld(WorldSelectionList.java:448) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.screens.worldselection.WorldSelectionList$WorldListEntry.mouseClicked(WorldSelectionList.java:375) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.components.AbstractSelectionList.mouseClicked(AbstractSelectionList.java:336) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.components.events.ContainerEventHandler.mouseClicked(ContainerEventHandler.java:28) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.MouseHandler.lambda$onPress$0(MouseHandler.java:88) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.gui.screens.Screen.wrapScreenError(Screen.java:522) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.MouseHandler.onPress(MouseHandler.java:85) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.MouseHandler.lambda$setup$4(MouseHandler.java:185) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.util.thread.BlockableEventLoop.execute(BlockableEventLoop.java:90) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:accesstransformer:B}
    at net.minecraft.client.MouseHandler.lambda$setup$5(MouseHandler.java:184) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:43) ~[lwjgl-glfw-3.3.1.jar%23162!/:build 7] {}
    at org.lwjgl.system.JNI.invokeV(Native Method) ~[lwjgl-3.3.1.jar%23168!/:build 7] {}
    at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3403) ~[lwjgl-glfw-3.3.1.jar%23162!/:build 7] {}
    at com.mojang.blaze3d.systems.RenderSystem.flipFrame(RenderSystem.java:164) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at com.mojang.blaze3d.platform.Window.updateDisplay(Window.java:337) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.runTick(Minecraft.java:1140) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.run(Minecraft.java:697) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.main.Main.run(Main.java:212) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraft.client.main.Main.main(Main.java:51) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {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$0(ForgeClientUserdevLaunchHandler.java:25) ~[fmlloader-1.19.1-42.0.9.jar%2395!/:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:30) [modlauncher-10.0.8.jar%23108!/:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:53) [modlauncher-10.0.8.jar%23108!/:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:71) [modlauncher-10.0.8.jar%23108!/:?] {}
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:106) [modlauncher-10.0.8.jar%23108!/:?] {}
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:77) [modlauncher-10.0.8.jar%23108!/:?] {}
    at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:26) [modlauncher-10.0.8.jar%23108!/:?] {}
    at cpw.mods.modlauncher.BootstrapLaunchConsumer.accept(BootstrapLaunchConsumer.java:23) [modlauncher-10.0.8.jar%23108!/:?] {}
    at cpw.mods.bootstraplauncher.BootstrapLauncher.main(BootstrapLauncher.java:141) [bootstraplauncher-1.1.2.jar:?] {}
Caused by: java.lang.NullPointerException: Cannot invoke "com.google.gson.Gson.getAdapter(java.lang.Class)" because "p_13781_" is null
    at net.minecraft.util.GsonHelper.fromJson(GsonHelper.java:425) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading}
    at net.minecraft.util.GsonHelper.fromJson(GsonHelper.java:464) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading}
    at net.minecraft.server.packs.resources.SimpleJsonResourceReloadListener.prepare(SimpleJsonResourceReloadListener.java:43) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading}
    at net.minecraft.server.packs.resources.SimpleJsonResourceReloadListener.prepare(SimpleJsonResourceReloadListener.java:16) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading}
    at net.minecraft.server.packs.resources.SimplePreparableReloadListener.lambda$reload$0(SimplePreparableReloadListener.java:10) ~[forge-1.19.1-42.0.9_mapped_official_1.19.1-recomp.jar%23183!/:?] {re:classloading}
    at java.util.concurrent.CompletableFuture$AsyncSupply.run$$$capture(CompletableFuture.java:1768) ~[?:?] {}
    at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java) ~[?:?] {}
    at java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1760) ~[?:?] {}
    at java.util.concurrent.ForkJoinTask.doExec$$$capture(ForkJoinTask.java:373) ~[?:?] {}
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java) ~[?:?] {}
    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) ~[?:?] {}

 

debug.log:

https://gist.github.com/DAQEM/6e09bc9d51cd2fb72265116b1982f843

 

ReloadListener:

@Mod.EventBusSubscriber(modid = JobsPlus.MOD_ID)
public class EventAddReloadListener {

    @SubscribeEvent
    public static void dataLoading(AddReloadListenerEvent event) {
        event.addListener(ModRecipeManager.instance);
    }
}

 

ModRecipeManeger:

public class ModRecipeManager extends SimpleJsonResourceReloadListener {

    public static final ModRecipeManager instance = new ModRecipeManager();
    private static final Gson GSON = new GsonBuilder().setPrettyPrinting().disableHtmlEscaping().create();

    public ModRecipeManager() {
        super(GSON, "custom_recipes");
    }

    @Override
    protected void apply(Map<ResourceLocation, JsonElement> jsonElementMap, ResourceManager p_10794_, ProfilerFiller p_10795_) {
    }
}

 

File in 'resources > data > jobsplus > custom_recipes':

{
  "id": "jobsplus:exp_jar",
  "key": {
    "A": {
      "item": "minecraft:glass"
    },
    "B": {
      "item": "minecraft:emerald"
    },
    "C": {
      "item": "minecraft:oak_planks"
    }
  },
  "pattern": [
    "     ",
    " CCC ",
    " ABA ",
    " AAA ",
    "     "
  ],
  "requiredLevel": 10
}

 

Any help is greatly appriciated! Thank you!

public static final ModRecipeManager instance = new ModRecipeManager(); // What is the value of GSON here?
private static final Gson GSON = new GsonBuilder().setPrettyPrinting().disableHtmlEscaping().create();

 

Thank you @warjort. Moving GSON to the top resolved the issue.

New ModRecipeManager class:

public class ModRecipeManager extends SimpleJsonResourceReloadListener {

	private static final Gson GSON = new GsonBuilder().setPrettyPrinting().disableHtmlEscaping().create();
    public static final ModRecipeManager instance = new ModRecipeManager();

    public ModRecipeManager() {
        super(GSON, "custom_recipes");
    }

    @Override
    protected void apply(Map<ResourceLocation, JsonElement> jsonElementMap, ResourceManager p_10794_, ProfilerFiller p_10795_) {
    }
}