I normally sync Zwift activities directly to Garmin Connect, and for some reason a ride I did today didn't show up in my activities. So I tried manually downloading it and uploading it to Garmin Connect Web, but I'm getting the error "An error occurred with your upload. Please try again." Not very helpful... Strava is showing this activity. I tried using https://www.fitfiletools.com/ to repair corrupt time stamps, but I don't know if that's actually the problem with this file.
How can I fix whatever is wrong with this file?
[soled]