error syncing with Garmin Connect

I am getting the following messages when I try syncing with Garmin Connect (see attached photo):
- There was an error syncing with Garmin connect.
- Some files could not be uploaded to Garmin Connect: Jan 1. 1970 at 2:00 AM (invalid file)

I had a similar issue when I installed 20.26, except that the invalid file name was different, I think. I didn't do anything at the time, hoping that the next update would solve the issue, but it hasn't:(

Has anyone else had a similar issue of late? What would be the solution. 

?