Fatal error: Uncaught Error: Class 'Swift_Preferences' not found in /home/demohatinco/public_html/construction_management_system_backend_del/vendor/swiftmailer/swiftmailer/lib/preferences.php:9 Stack trace: #0 {main} thrown in /home/demohatinco/public_html/construction_management_system_backend_del/vendor/swiftmailer/swiftmailer/lib/preferences.php on line 9