Fatal error: Uncaught exception 'PHPMailer\PHPMailer\Exception' with message 'Could not execute: /usr/sbin/sendmail' in /volume3/web/mail-sender/src/PHPMailer.php:1790 Stack trace: #0 /volume3/web/mail-sender/src/PHPMailer.php(1660): PHPMailer\PHPMailer\PHPMailer->sendmailSend('Date: Thu, 29 S...', 'This is a multi...') #1 /volume3/web/mail-sender/src/PHPMailer.php(1500): PHPMailer\PHPMailer\PHPMailer->postSend() #2 /volume3/web/mail-sender/index.php(97): PHPMailer\PHPMailer\PHPMailer->send() #3 {main} thrown in /volume3/web/mail-sender/src/PHPMailer.php on line 1790