I have no water pressure from my kitchen sink faucet - the water just trickles when turned on, but the sprayer on the same fixture works fine and has plenty of water pressure. The fixture is brand new, and the lines aren't kinked and seem clear. Any suggestions?

The fixture is brand new, and the lines aren't kinked and seem clear. Any suggestions?
Yes! Remove the aerator (see image) and check and clean the screen. Try the water with the aerator off. Full stream now? Good luck, Tom