Fatal error: Uncaught Error: Class "Symfony\Component\Mime\Part\AbstractMultipartPart" not found in /home/bimmertest/BookStack/vendor/symfony/mime/Part/Multipart/AlternativePart.php:19
Stack trace:
#0 {main}
thrown in /home/bimmertest/BookStack/vendor/symfony/mime/Part/Multipart/AlternativePart.php on line 19