A rogue Facebook application called Error Check Systems was sending misleading notification messages. The typical warning read:[Name] has faced some errors when checking your profile. View The Errors Message. Of course there was nothing really wrong with the recipient’s profiles, and the misleading notifications were an attempt by a third party Facebook application to recruit more users, and potentially steal personal information from profiles. The rogue application sent misleading notifications to friends who had had problems viewing their profiles.”]
Source: https://grahamcluley.com/beware-error-check-system-facebook-application-2/