These ConfiguredFeature was found to be not registered. Look at the JSON info and try to
 find which mod it belongs to. Then go tell that mod owner to register their ConfiguredFeature
 as otherwise, it will break other mods or datapacks that registered their stuff.

 Unregistered ConfiguredFeature JSON info : {
  "config": {
    "feature": {
      "config": {
        "feature": {
          "config": {
            "feature": {
              "config": {
                "can_replace": false,
                "project": true,
                "need_water": false,
                "xspread": 7,
                "yspread": 3,
                "zspread": 7,
                "whitelist": [],
                "blacklist": [],
                "tries": 64,
                "state_provider": {
                  "state": {
                    "Name": "werewolves:wolfsbane"
                  },
                  "type": "minecraft:simple_state_provider"
                },
                "block_placer": {
                  "type": "minecraft:simple_block_placer"
                }
              },
              "type": "minecraft:flower"
            },
            "decorator": {
              "config": {},
              "type": "minecraft:spread_32_above"
            }
          },
          "type": "minecraft:decorated"
        },
        "decorator": {
          "config": {
            "outer": {
              "config": {},
              "type": "minecraft:square"
            },
            "inner": {
              "config": {},
              "type": "minecraft:heightmap"
            }
          },
          "type": "minecraft:decorated"
        }
      },
      "type": "minecraft:decorated"
    },
    "decorator": {
      "config": {
        "count": 1
      },
      "type": "minecraft:count"
    }
  },
  "type": "minecraft:decorated"
}

 Biome affected : [minecraft:forest, minecraft:dark_forest_hills, werewolves:werewolf_heaven, minecraft:tall_birch_forest, minecraft:birch_forest_hills, minecraft:dark_forest, vampirism:vampire_forest_hills,
                   minecraft:birch_forest, vampirism:vampire_forest, minecraft:wooded_hills, minecraft:flower_forest, minecraft:tall_birch_hills]


[23Sep2021 23:37:18.617] [Render thread/ERROR] [com.telepathicgrunt.blame.Blame/]: 

-----------------------------------------------------------------------
****************** Blame Report 1.16.5-3.3.0-forge ******************

 This is an lengthy report. It is suppose to automatically read
 the JSON of all the unregistered ConfiguredFeatures, ConfiguredStructures,
 and ConfiguredCarvers. Then does its best to collect the terms that seem to
 state whose mod the unregistered stuff belongs to.

Possible mods responsible for unregistered stuff:

werewolves:wolfsbane

-----------------------------------------------------------------------```