Fatal error: Uncaught Error: Class 'Swift_Mime_AttachmentTest' not found in /home/clienti2020/public_html/novaballet.it/vendor/swiftmailer/swiftmailer/tests/unit/Swift/Mime/EmbeddedFileTest.php:4 Stack trace: #0 {main} thrown in /home/clienti2020/public_html/novaballet.it/vendor/swiftmailer/swiftmailer/tests/unit/Swift/Mime/EmbeddedFileTest.php on line 4