Fatal error: Uncaught Error: Interface "Mailgun\Exception" not found in /home/backend/public_html/shoot/api/system/vendor/mailgun/mailgun-php/src/Exception/HttpClientException.php:21 Stack trace: #0 {main} thrown in /home/backend/public_html/shoot/api/system/vendor/mailgun/mailgun-php/src/Exception/HttpClientException.php on line 21