Same issue! i need the update for 4.6 WP
the message was: Fatal error: Call to undefined method Requests_Response::is_redirect() in /home/content/a2pnexwpnas01_data01/97/3343397/html/wp-includes/class-requests.php on line 685
i don’t know if it was the only plugin, but i’m sure this one affects my WP un 4.6 version… We will wait you Infogram! Please update! Best regards.