Anvil json loading exception

anvil.json

{
  "forge_marker": 1,
  "defaults": {
    "textures": {},
    "model": "armory:anvil/BlockModel.Anvil-armory",
    "custom": {
      "flip-v": true
    }
  },
  "variants": {
    "normal": [
      {}
    ],
    "facing=north": {},
    "facing=south": {"y": 180 },
    "facing=west":  {"y": 270 },
    "facing=east":  {"y": 90 },
    "inventory": [
      {
        "model": "armory:anvil/BlockModel.Anvil-armory",
        "custom": {
          "flip-v": true
        },
        "transform": "forge:default-block"
      }
    ]
  }
}