Fatal error: Uncaught Error: Class 'SendGrid\Response' not found in /var/www/static/includes/sendgrid-php/vendor/sendgrid/php-http-client/lib/Client.php:172 Stack trace: #0 /var/www/static/includes/sendgrid-php/vendor/sendgrid/php-http-client/lib/Client.php(213): SendGrid\Client->makeRequest('get', 'https://api.sen...', NULL, Array) #1 /var/www/static/includes/sendgrid-php/vendor/sendgrid/php-http-client/examples/example.php(16): SendGrid\Client->__call('get', Array) #2 {main} thrown in /var/www/static/includes/sendgrid-php/vendor/sendgrid/php-http-client/lib/Client.php on line 172