Ok so there are typos in:
homesweethome\entities\decoration\clay_wall_double_candle\clay_wall_double_candle.json
homesweethome\entities\decoration\clay_wall_double_candle\clay_wall_double_candle_ghost.json
homesweethome\entities\decoration\clay_wall_double_candle\clay_wall_double_candle_iconic.json
(they have several places in each file where instead of stonehearth it says clayhearth)
In these ones:
homesweethome\entities\decoration\wood_wall_double_candle\wood_wall_double_candle.json
homesweethome\entities\decoration\wood_wall_double_candle\wood_wall_double_candle_ghost.json
homesweethome\entities\decoration\wood_wall_double_candle\wood_wall_double_candle_iconic.json
the same but it says woodhearth
The silverhearth ones:
homesweethome\entities\decoration\wood_wall_double_candle\wood_wall_double_candle_iconic.json
homesweethome\entities\decoration\silver_wall_double_candle\silver_wall_double_candle_ghost.json
homesweethome\entities\decoration\silver_wall_double_candle\silver_wall_double_candle_iconic.json
And the bronzehearth ones:
homesweethome\entities\decoration\bronze_wall_double_candle\bronze_wall_double_candle.json
homesweethome\entities\decoration\bronze_wall_double_candle\bronze_wall_double_candle_ghost.json
homesweethome\entities\decoration\bronze_wall_double_candle\bronze_wall_double_candle_iconic.json