1.12.2 loot table set data function

Hi,

I have a loot table. It checks out to be valid json and it runs fine without the problem code below:

{
      "type": "item",
      "name": "minecraft:wool",
      "weight": 15,
      "functions": [
        {
          "function": "minecraft:set_data",
          "data": 0
        },
        {
          "function": "minecraft:set_count",
          "count": {
            "min": 1,
            "max": 5
          }
        }
      ]
    }

I followed the tutorial here: https://github.com/skylinerw/guides/blob/master/java/loot tables.md

The error message in the log file:

[18:50:27] [Server thread/ERROR] [minecraft/LootTableManager]: Couldn't load loot table oreberriesgalore:king_den_loot_table from file:/C:/Users/dino/IdeaProjects/Oreberries-1.12.2/classes/production/Oreberries-1.12.2.main/assets/oreberriesgalore/loot_tables/king_den_loot_table.json
com.google.gson.JsonSyntaxException: Missing entries
    at net.minecraft.util.JsonUtils.deserializeClass(JsonUtils.java:375) ~[JsonUtils.class:?]
    at net.minecraft.world.storage.loot.LootPool$Serializer.deserialize(LootPool.java:153) ~[LootPool$Serializer.class:?]
    at net.minecraft.world.storage.loot.LootPool$Serializer.deserialize(LootPool.java:147) ~[LootPool$Serializer.class:?]
    at com.google.gson.internal.bind.TreeTypeAdapter.read(TreeTypeAdapter.java:69) ~[TreeTypeAdapter.class:?]
    at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:41) ~[TypeAdapterRuntimeTypeWrapper.class:?]
    at com.google.gson.internal.bind.ArrayTypeAdapter.read(ArrayTypeAdapter.java:72) ~[ArrayTypeAdapter.class:?]
    at com.google.gson.Gson.fromJson(Gson.java:887) ~[Gson.class:?]
    at com.google.gson.Gson.fromJson(Gson.java:952) ~[Gson.class:?]
    at com.google.gson.internal.bind.TreeTypeAdapter$GsonContextImpl.deserialize(TreeTypeAdapter.java:162) ~[TreeTypeAdapter$GsonContextImpl.class:?]
    at net.minecraft.util.JsonUtils.deserializeClass(JsonUtils.java:359) ~[JsonUtils.class:?]
    at net.minecraft.util.JsonUtils.deserializeClass(JsonUtils.java:381) ~[JsonUtils.class:?]
    at net.minecraft.world.storage.loot.LootTable$Serializer.deserialize(LootTable.java:210) ~[LootTable$Serializer.class:?]
    at net.minecraft.world.storage.loot.LootTable$Serializer.deserialize(LootTable.java:205) ~[LootTable$Serializer.class:?]
    at com.google.gson.internal.bind.TreeTypeAdapter.read(TreeTypeAdapter.java:69) ~[TreeTypeAdapter.class:?]
    at com.google.gson.Gson.fromJson(Gson.java:887) ~[Gson.class:?]
    at com.google.gson.Gson.fromJson(Gson.java:852) ~[Gson.class:?]
    at com.google.gson.Gson.fromJson(Gson.java:801) ~[Gson.class:?]
    at com.google.gson.Gson.fromJson(Gson.java:773) ~[Gson.class:?]
    at net.minecraftforge.common.ForgeHooks.loadLootTable(ForgeHooks.java:1163) ~[ForgeHooks.class:?]
    at net.minecraft.world.storage.loot.LootTableManager$Loader.loadBuiltinLootTable(LootTableManager.java:156) [LootTableManager$Loader.class:?]
    at net.minecraft.world.storage.loot.LootTableManager$Loader.load(LootTableManager.java:72) [LootTableManager$Loader.class:?]
    at net.minecraft.world.storage.loot.LootTableManager$Loader.load(LootTableManager.java:53) [LootTableManager$Loader.class:?]
    at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3716) [guava-21.0.jar:?]
    at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2424) [guava-21.0.jar:?]
    at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2298) [guava-21.0.jar:?]
    at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2211) [guava-21.0.jar:?]
    at com.google.common.cache.LocalCache.get(LocalCache.java:4154) [guava-21.0.jar:?]
    at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:4158) [guava-21.0.jar:?]
    at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:5147) [guava-21.0.jar:?]
    at com.google.common.cache.LocalCache$LocalLoadingCache.getUnchecked(LocalCache.java:5153) [guava-21.0.jar:?]
    at net.minecraft.world.storage.loot.LootTableManager.getLootTableFromLocation(LootTableManager.java:40) [LootTableManager.class:?]
    at net.minecraft.world.storage.loot.LootTableManager.reloadLootTables(LootTableManager.java:49) [LootTableManager.class:?]
    at net.minecraft.world.storage.loot.LootTableManager.<init>(LootTableManager.java:35) [LootTableManager.class:?]
    at net.minecraft.world.WorldServer.init(WorldServer.java:161) [WorldServer.class:?]
    at net.minecraft.server.integrated.IntegratedServer.loadAllWorlds(IntegratedServer.java:123) [IntegratedServer.class:?]
    at net.minecraft.server.integrated.IntegratedServer.init(IntegratedServer.java:160) [IntegratedServer.class:?]
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:552) [MinecraftServer.class:?]
    at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201]