Gateway Timeout from Managed Backup

Hello!

I have been unableto successfully create a backup to WPMU DEV managed backups. I always get a Gateway TImeout error (see attached screenshot).

Is this issue realted to the issue described in this thread?: https://premium.wpmudev.org/forums/topic/snapshot-managed-backup-stops-if-you-leave-the-page-or-do-other-updates

...Or something else?