Property 'uScale' does not exist on type 'BaseTexture'

[labris]

See this answer to the same question - Why can't I use "material.diffuseTexture.uScale" property? - #3 by RaananW
Shortly, either create the const for the material texture or cast the right type.
Example:

  (wallMaterial.albedoTexture as BABYLON.Texture).uScale = 10;