Fatal error: Uncaught Error: Class 'Symfony\Component\Mime\Header\AbstractHeader' not found in /home/apicrmalfaextrem/public_html/vendor_old/symfony/mime/Header/UnstructuredHeader.php:19
Stack trace:
#0 {main}
thrown in /home/apicrmalfaextrem/public_html/vendor_old/symfony/mime/Header/UnstructuredHeader.php on line 19