Hello,
I suspect your host is killing the process since it's using too many resources.
Please get inside Akeeba Backup configuration page and set the following values:
Minimum execution time 5 seconds
Maximum execution time 1 second
Runtime bias 50%
Yes, minimum is greater than maximum, that's not a typo. In this way the backup process will be slower but it should complete. Let me know if that works for you.
Davide Tampellini
Developer and Support Staff
🇮🇹Italian: native 🇬🇧English: good • 🕐 My time zone is Europe / Rome (UTC +1)
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!