Textures not rendering correctly

so basically, my block uses a texture that doesn't exist, does this have to do with the texture itself?
{
  "parent": "saucepack:custom/sifter",
  "textures": {
    "all": "saucepack:block/sifter",
    "particle": "saucepack:block/sifter",
    "0": "saucepack:block/siftertexture"
  },
  "render_type": "solid"
}
the texture that doesn't exist is siftertexture