Fatal error: Uncaught Error: Class "PHPMailer\PHPMailer\SMTP" not found in /volume1/web/phpmailer/PHPMailer-6.9.3/vendor/phpmailer/phpmailer/src/PHPMailer.php:2017
Stack trace:
#0 /volume1/web/phpmailer/PHPMailer-6.9.3/vendor/phpmailer/phpmailer/src/PHPMailer.php(2173): PHPMailer\PHPMailer\PHPMailer->getSMTPInstance()
#1 /volume1/web/phpmailer/PHPMailer-6.9.3/vendor/phpmailer/phpmailer/src/PHPMailer.php(2086): PHPMailer\PHPMailer\PHPMailer->smtpConnect(Array)
#2 /volume1/web/phpmailer/PHPMailer-6.9.3/vendor/phpmailer/phpmailer/src/PHPMailer.php(1715): PHPMailer\PHPMailer\PHPMailer->smtpSend('Date: Wed, 10 J...', '--b1=_DlSDFlEXW...')
#3 /volume1/web/phpmailer/PHPMailer-6.9.3/vendor/phpmailer/phpmailer/src/PHPMailer.php(1549): PHPMailer\PHPMailer\PHPMailer->postSend()
#4 /volume1/web/phpmailer/send_mail_smtp.php(90): PHPMailer\PHPMailer\PHPMailer->send()
#5 {main}
  thrown in /volume1/web/phpmailer/PHPMailer-6.9.3/vendor/phpmailer/phpmailer/src/PHPMailer.php on line 2017