Sidecar error: Unable to connect to [iPad name]. A miscellaneous error occurred (-1010). (OK)
MacBook Pro (16-inch, M1 Pro) with macOS Monterey 12.3.1 and an iPad Air 5th-Gen with iOS 15.4.1 and a USB-C-to-USB-C cable. Occurred while the iPad was switched out of Sidecar into a different iOS app for a few minutes. Both devices had been restarted recently due to troubleshooting Sidecar freezing problems.
MacBook Pro 16″, macOS 12.3