That's right friend, the monthly logfile was blank. Right now it is no longer because the data from the days following the error is being stored, that is, from day 3 if there was data. The backup file databackup52024.zip was exactly the same. I have been able to recover something from day 1 since I have WD configured to upload to my hosting. However, I have added the lines to the logfile and from the program I load the logfile and those entries added manually do not appear, it indicates that there is no data for day one.
Does anything occur to you? Thank you so much