Windshield wiper fluid. ..

Either the washer nozzles may be plugged, you can blow them out with air. Pull the hose off and see if it pumps up washer fluid, if it does not, may need a new washer pump.

Most of the time it's a plugged or frozen nozzle. You can also check the hose itself hasn't cracked or split. If it did you can repair it cheaply with a larger diameter rubber hose from any parts store, just slip it over the broken ends.