Fatal error: Uncaught PHPMailer\PHPMailer\Exception: Invalid address: (addAnAddress to): in /home/kiasain/public_html/PHPMailer/PHPMailer/src/PHPMailer.php:966 Stack trace: #0 /home/kiasain/public_html/PHPMailer/PHPMailer/src/PHPMailer.php(899): PHPMailer\PHPMailer\PHPMailer->addOrEnqueueAnAddress('to', '', '') #1 /home/kiasain/public_html/getotp.php(55): PHPMailer\PHPMailer\PHPMailer->addAddress(NULL) #2 {main} thrown in /home/kiasain/public_html/PHPMailer/PHPMailer/src/PHPMailer.php on line 966