Hi,
Thanks for the log.
It shows that the backup process is timed out or killed off.
Could you try to reduce the backup archive split size. This will split the backup into smaller, more manageable files.
To do this, open the ‘expert settings’ section of the UpdraftPlus Settings tab, and find the ‘split backups every’ option. Set this to 100Mb or 50Mb, save your settings and run clone process?
To clone site, just go to the “Migrate/Clone” tab and click the Clone button then follow the rest of the steps.
Regards,
Bryle