Fatal error: Uncaught Error: Class 'Swift_Mime_MimePart' not found in /home/clienti2020/public_html/novaballet.it/vendor/swiftmailer/swiftmailer/lib/classes/Swift/MimePart.php:16 Stack trace: #0 {main} thrown in /home/clienti2020/public_html/novaballet.it/vendor/swiftmailer/swiftmailer/lib/classes/Swift/MimePart.php on line 16