Dont understand the problem. plz help me.

So, i export my mod, launch it and then... minecraft launch and say this: [23Apr2020 21:22:31.794] [modloading-worker-2/ERROR] [net.minecraftforge.fml.javafmlmod.FMLModContainer/]: Exception caught during firing event: net.minecraft.world.gen.feature.OreFeatureConfig$FillerBlockType.create(Ljava/lang/String;Ljava/lang/String;Ljava/util/function/Predicate;)Lnet/minecraft/world/gen/feature/OreFeatureConfig$FillerBlockType;
    Index: 1
    Listeners:
        0: NORMAL
        1: net.minecraftforge.eventbus.EventBus$$Lambda$1939/1396538465@4be65843
java.lang.NoSuchMethodError: net.minecraft.world.gen.feature.OreFeatureConfig$FillerBlockType.create(Ljava/lang/String;Ljava/lang/String;Ljava/util/function/Predicate;)Lnet/minecraft/world/gen/feature/OreFeatureConfig$FillerBlockType;

I dont understand cuz they dont tell me what block or item cause the problem, some help plz?