Fatal error: Uncaught Error: Class "Mailgun\Messages\MessageBuilder" not found in /srv/www/comaea/public_html/wp-content/plugins/ameliabooking/vendor/mailgun/mailgun-php/src/Mailgun/Messages/BatchMessage.php:24 Stack trace: #0 {main} thrown in /srv/www/comaea/public_html/wp-content/plugins/ameliabooking/vendor/mailgun/mailgun-php/src/Mailgun/Messages/BatchMessage.php on line 24