Fatal error: Uncaught Error: Interface 'Facebook\Http\RequestBodyInterface' not found in /home/tsaipeigroup/public_html/STRUCTURE/FacebookSDK/Http/RequestBodyMultipart.php:37 Stack trace: #0 {main} thrown in /home/tsaipeigroup/public_html/STRUCTURE/FacebookSDK/Http/RequestBodyMultipart.php on line 37