Fatal error: Uncaught Error: Class 'Webmozart\Assert\Assert' not found in /home/customer/www/londonfencingclub.co.uk/public_html/vendor/mailgun/mailgun-php/src/Mailgun/Assert.php:19 Stack trace: #0 {main} thrown in /home/customer/www/londonfencingclub.co.uk/public_html/vendor/mailgun/mailgun-php/src/Mailgun/Assert.php on line 19