Fatal error: Uncaught Error: Class "Symfony\Component\Mailer\Transport\AbstractTransport" not found in /usr/home/jiexusheng/domains/linuxdo.isgre.at/public_html/vendor/symfony/mailer/Transport/NullTransport.php:21
Stack trace:
#0 {main}
  thrown in /usr/home/jiexusheng/domains/linuxdo.isgre.at/public_html/vendor/symfony/mailer/Transport/NullTransport.php on line 21