Import fit file from watch to connect

After finishing a workout, the watch did not save the activity. The message "Saving" appeared, I waited for 20 minutes. After waiting, I turned the watch off and on again.
The file is on the clock with a problem, when I try to import it to connect through the application, the message "The file was not accepted by the system" appears.

Is it possible to recover this file?

Thank you for your attention.