Fatal error: Uncaught Error: Class 'PHPMailer\PHPMailer\SMTP' not found in /wp-includes/PHPMailer/PHPMailer.php:1821 Stack trace: #0 /wp-includes/PHPMailer/PHPMailer.php(1942): PHPMailer\PHPMailer\PHPMailer->getSMTPInstance() #1 /wp-includes/PHPMailer/PHPMailer.php(1858): PHPMailer\PHPMailer\PHPMailer->smtpConnect(Array) #2 /wp-includes/PHPMailer/PHPMailer.php(1601): PHPMailer\PHPMailer\PHPMailer->smtpSend('Date: Tue, 20 O...', '\r\n<!DOCTYPE htm...') #3 /wp-content/plugins/wp-mail-smtp/src/MailCatcher.php(88): PHPMailer\PHPMailer\PHPMailer->postSend() #4 /wp-includes/pluggable.php(498): WPMailSMTP\MailCatcher->send() #5 /wp-content/plugins/better-wp-security/core/lib/class-itsec-mail.php(624): wp_mail(Array, '[zpn.ro] Daily ...', '\n<!DOCTYPE html...', Array, Array) #6 /wp-content/plugins/better-wp-security/core/modules/notification-center/class-notification-center.php(532): ITSEC_Mail->send() #7 /wp-content/plugins/better-wp-security/core/notify.php(218): ITSEC_Notification_Center->send('digest', Object(ITSEC_Mail)) #8 in /wp-includes/PHPMailer/PHPMailer.php on line 1821