Fatal error: Uncaught Error: Class 'Swift_DependencyContainer' not found in /var/www/Cachet/vendor/swiftmailer/swiftmailer/lib/dependency_maps/mime_deps.php:5 Stack trace: #0 {main} thrown in /var/www/Cachet/vendor/swiftmailer/swiftmailer/lib/dependency_maps/mime_deps.php on line 5