Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/tmbeta/public_html/cebasptransparencia/vendor/symfony/mime/Tests/Header/MailboxHeaderTest.php:19 Stack trace: #0 {main} thrown in /home/tmbeta/public_html/cebasptransparencia/vendor/symfony/mime/Tests/Header/MailboxHeaderTest.php on line 19