Replace the wiper blade. You should really be replacing them at least once a year, even high-end ones. If you don’t park in a garage, UV damage usually kills them in a year or less too.
And even if it’s not that “old” they can get damaged through normal use if you get enough bug splatters, leaves/needles, or have run them across an iced-up windshield. They’re thin rubber/silicone and the edges wear, age, and get nicked/torn pretty easily.