http status code: -1 from URL: https://graph.microsoft.com/v1.0 ...

We receive this strange http error from graph mailbox.

http status code: -1 from URL: https://graph.microsoft.com/v1.0/users/email address removed for privacy reasons/messages/AAMkADFhZWFmNjEyLTMxN2UtNGI1My05OWRhLTUyZmEzMTg3NmM1MgBGAAAAAAAxXscBg9uSRr4TMFtHLL7IBwAPoK_BFSpzQJCeanUFKXoRAAAAAAEMAAAPoK_BFSpzQJCeanUFKXoRAAE7Tjt3AAA=