Fatal error: Uncaught Error: Class "Ramsey\Collection\Map\AbstractMap" not found in /home/appdemo/public_html/samena-mailer/vendor/ramsey/collection/src/Map/NamedParameterMap.php:31 Stack trace: #0 {main} thrown in /home/appdemo/public_html/samena-mailer/vendor/ramsey/collection/src/Map/NamedParameterMap.php on line 31