Error

ERROR:
[19:12:47] [Client thread/ERROR]: MultiModel minecraft:builtin/missing is empty (no base model or parts were provided/resolved)
[19:12:47] [Client thread/ERROR]: MultiModel minecraft:builtin/missing is empty (no base model or parts were provided/resolved)
[19:12:47] [Client thread/ERROR]: MultiModel minecraft:builtin/missing is empty (no base model or parts were provided/resolved)
[19:12:47] [Client thread/ERROR]: MultiModel minecraft:builtin/missing is empty (no base model or parts were provided/resolved)
[19:12:47] [Client thread/ERROR]: MultiModel minecraft:builtin/missing is empty (no base model or parts were provided/resolved)
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=north,isfoot=true,islid=false not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=south,isfoot=true,islid=true not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=west,isfoot=true,islid=true not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=west,isfoot=false,islid=true not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=east,isfoot=true,islid=true not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=west,isfoot=false,islid=false not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=west,isfoot=true,islid=false not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=east,isfoot=false,islid=true not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=north,isfoot=true,islid=true not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=north,isfoot=false,islid=false not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=south,isfoot=false,islid=true not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=east,isfoot=true,islid=false not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=north,isfoot=false,islid=true not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=south,isfoot=false,islid=false not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=south,isfoot=true,islid=false not found
[19:12:47] [Client thread/ERROR]: Model definition for location graves:graveslave#facing=east,isfoot=false,islid=false not found

BLOCKSTATE:

{
  "forge_marker": 1,
  "defaults": {
    "textures": {
      "#tex": "minecraft:blocks/wool_colored_red"
    }
  },
  "variants": {
    "normal": [
      {}
    ],
    "inventory": [
      {}
    ],
    "islid": {
      "false": {
        "model": "graves:graveboxsection.obj"
      },
      "true": {
        "model": "graves:gravelidsection.obj"
      }
    },
    "isFoot": {
      "false": {},
      "true": {
        "y": 180
      }
    },
    "facing": {
      "north": {},
      "south": {
        "y": 180
      },
      "west": {
        "y": 270
      },
      "east": {
        "y": 90
      }
    }
  }
}