Screen recorder not working on Ubuntu 22.04

I just upgraded from 20.04 to 22.04 on a Lenovo IdeaPad 3 15ITL05. I wanted to use the new screen recorder, so I pressed PrtSc, which brought up the normal options. The screenshot function seems to be working fine, but when I choose to record, the symbol at the top of the screen pops up for a split second, then vanishes and nothing happens. Any ideas about how to fix this??