iPhone sync won't start
I have an iPhone 7 running iOS 15.3.1 and a late 2015 iMac running Monterey 12.2.1. I connect them via a USB cable. The phone appears in the iMac Finder window, and the data is updated in the General tab. When I select the "apply" or the "sync" button, the barbershop bar at the bottom starts with "Syncing (Step 1 of 5) - Waiting for sync to start". After a minute or so, a window pops up with "The iPhone could not be synced because the sync session failed to start."
Anyone have any idea what is going on?
iPhone 7, iOS 15