Fatal error: Uncaught PHPMailer\PHPMailer\Exception: Invalid address: (to): in /var/www/html/composer/vendor/phpmailer/phpmailer/src/PHPMailer.php:1112 Stack trace: #0 /var/www/html/composer/vendor/phpmailer/phpmailer/src/PHPMailer.php(1032): PHPMailer\PHPMailer\PHPMailer->addOrEnqueueAnAddress('to', '', ' ') #1 /var/www/html/ppn/api/olvcon.php(52): PHPMailer\PHPMailer\PHPMailer->addAddress('', ' ') #2 {main} thrown in /var/www/html/composer/vendor/phpmailer/phpmailer/src/PHPMailer.php on line 1112