Garmin Express showed "There was an error syncing with Garmin Connect"

When I connect my Descent Mk2i to my Mac with Garmin Express, it showed an error message "There was an error syncing with Garmin Connect".

There was software updates but I cannot install them as the above message came up again after hitting the "Install All" button.

The Descent syncs with the Garmin Connect on iPhone without a problem.

Garmin Express version 7.17.0.0

Descent Mk2i software version 18.2 (bbae296).

Please help.