Why is that? it corresponds to a normal (??) workout of strenght/deadlift, the only weird thing is that the auto lap/set didn't work so i had to lap it manually....

when you get it not to upload...
check if you can repair your file with help of FitFileRepairTool
or
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zip the fit file and upload here in the forum, or provide a link to it on a cloud storage
happy & safe sporting