Fatal error: Uncaught Error: Interface 'Symfony\Component\Mime\Header\HeaderInterface' not found in /home/demo1innoblitz/public_html/dhwani-cms/vendor2/symfony/mime/Header/AbstractHeader.php:21 Stack trace: #0 {main} thrown in /home/demo1innoblitz/public_html/dhwani-cms/vendor2/symfony/mime/Header/AbstractHeader.php on line 21