Hi, as the title says, my recipe generator doesn't work. Everytime I try to run it, it gives me this error:

Caused by: java.lang.NullPointerException: Cannot invoke "net.minecraft.world.item.CreativeModeTab.getRecipeFolderName()" because the return value of "net.minecraft.world.item.Item.getItemCategory()" is null
    at TRANSFORMER/[email protected]/net.minecraft.data.recipes.ShapedRecipeBuilder.save(ShapedRecipeBuilder.java:94)
    at TRANSFORMER/[email protected]/net.minecraft.data.recipes.RecipeBuilder.save(RecipeBuilder.java:21)
    at TRANSFORMER/[email protected]/kiwilis.simpleautomation.datagen.Recipes.buildCraftingRecipes(Recipes.java:20)
    at TRANSFORMER/[email protected]/net.minecraft.data.recipes.RecipeProvider.run(RecipeProvider.java:97)
    at TRANSFORMER/[email protected]/net.minecraft.data.DataGenerator.run(DataGenerator.java:44)
    at TRANSFORMER/[email protected]/net.minecraftforge.forge.event.lifecycle.GatherDataEvent$DataGeneratorConfig.lambda$runAll$0(GatherDataEvent.java:112)
    at MC-BOOTSTRAP/[email protected]/cpw.mods.modlauncher.api.LamdbaExceptionUtils.lambda$rethrowConsumer$0(LamdbaExceptionUtils.java:34)
    at java.base/java.util.HashMap$Values.forEach(HashMap.java:1067)
    at TRANSFORMER/[email protected]/net.minecraftforge.forge.event.lifecycle.GatherDataEvent$DataGeneratorConfig.runAll(GatherDataEvent.java:108)
    at TRANSFORMER/[email protected]/net.minecraftforge.fmllegacy.DatagenModLoader.begin(DatagenModLoader.java:59)
    at TRANSFORMER/[email protected]/net.minecraft.data.Main.main(Main.java:65)
    ... 13 more

Log: https://www.toptal.com/developers/hastebin/kafuhaxoya.yaml

My recipe generator class: https://www.toptal.com/developers/hastebin/ulaqajopat.less

I still don't know what's going on

Yes, i also realized that, but where does this method get called from and why does a get() function return null?

Thanks!

I still can't figure what's happening. Apparently ShapedRecipeBuilder.save() tries to run this.result.getItemCategory(), but this.result is null, but shoudn't this.result already be defined by ShapedRecipeBuilder.shaped()?

Certain parts or just all of it?

if you have a git repo post a link to it, if not post the relevant classes

https://github.com/Kiwilis/simple-automation

There's not much there yet, because this project isn't even a week old and I don't have a lot of time to work on it.

Thanks!