Problems with custom models for blocks

Greetings, I wanted to say that I have a problem with the textures of a custom 3D model that I made, since put some textures on it, but the textures don't load, the object is json model, and I did it with Blockbench.

Thanks you very much for your attention.

Ps: I forgot to say that the 3D model is not even seen, you only see a purple cube with black