Enfold WordPress Update to 4.9.1 Getting Header Error

Hello,
I just updated to latest version of WordPress 4.9.1 on:
http://chriscobracole.com/

I was previously on Enfold version #3.4.1 – when checking manual updates it gave me a message of “No Updates Available”

I am now getting this error at top of page:
Warning: http_build_query(): Parameter 1 expected to be Array or Object. Incorrect value given in /home/content/84/14031984/html/wp-includes/Requests/Transport/cURL.php on line 508

Warning: session_start(): Cannot send session cookie – headers already sent by (output started at /home/content/84/14031984/html/wp-includes/Requests/Transport/cURL.php:508) in /home/content/84/14031984/html/wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/masonry_entries.php on line 32

Warning: session_start(): Cannot send session cache limiter – headers already sent (output started at /home/content/84/14031984/html/wp-includes/Requests/Transport/cURL.php:508) in /home/content/84/14031984/html/wp-content/themes/enfold/config-templatebuilder/avia-shortcodes/masonry_entries.php on line 32

I just purchased Enfold 4.2 and cannot update Enfold through the admin.

Please help with cleaning up error first. Then instruct on how to update to newest version of Enfold 4.2

Thank you.