My Battery was down.
I tried to upload on STRAVA - <<The upload appears to be malformed and we are unable to process it.>>
My file is here.
https://www.dropbox.com/s/sykyd0wqppp5b70/2021-07-10-051405-ELEMNT%20ROAM%203D47-60-0.fit?dl=0
I tried the recommended tools but it is not possible as they are not available for Mac.
If anybody could help - its is 180k exercise of 10h