Looks like the normals on the mesh are wrong/inverted. UV mapping has to be resized and offset completely for the texture to show up and Unwrapping shows an error message. I suggest to rework your mesh and generate a clean UV Map.

[![enter image description here][1]][1]

[![enter image description here][2]][2]


  [1]: https://i.sstatic.net/trKy5.png
  [2]: https://i.sstatic.net/CP7cj.jpg