Fatal error: Uncaught Error: Interface "Http\Client\Common\Plugin" not found in /home/customer/www/londonfencingclub.co.uk/public_html/vendor/mailgun/mailgun-php/src/Mailgun/HttpClient/Plugin/ReplaceUriPlugin.php:21 Stack trace: #0 {main} thrown in /home/customer/www/londonfencingclub.co.uk/public_html/vendor/mailgun/mailgun-php/src/Mailgun/HttpClient/Plugin/ReplaceUriPlugin.php on line 21