Problems with backup, after backup some sites not open

[m0rpheu5]

Hello guys, i´m having problems with plesk backup, after the plesk backup, some of my sites appears a page from Parallels, and i need to suspend and unsuspend the domain to the site comes online again, Why this? How can i fix this?

This issue is happening with my three servers, i think that is the last domain in the domain list that happen this, any idea?

Thanks