Fatal error: Uncaught Error: Class "ZBateson\MailMimeParser\Header\AbstractHeader" not found in /home/matrixweb/public_html/whmcs2022/whmcs/vendor/zbateson/mail-mime-parser/src/Header/ParameterHeader.php:19
Stack trace:
#0 {main}
thrown in /home/matrixweb/public_html/whmcs2022/whmcs/vendor/zbateson/mail-mime-parser/src/Header/ParameterHeader.php on line 19