While clicking http://localhost:8080/wmts/gm_layer/gm_grid/0/0/0.png link as mentioned in the link I am getting an wired error

ows:ExceptionText No response from URL "http://mt0.google.com/vt/lyrs=s@0&hl=en&x=0&y=0&z=0": Name or service not known /ows:ExceptionText /ows:Exception /ows:ExceptionReport

any idea what could be the possible reason