Fatal error: Uncaught Error: Call to undefined function PHPMailer\PHPMailer\mail() in /home/knjiga80/public_html/wp-includes/PHPMailer/PHPMailer.php:894 Stack trace: #0 /home/knjiga80/public_html/wp-includes/PHPMailer/PHPMailer.php(2143): PHPMailer\PHPMailer\PHPMailer->mailPassthru() #1 /home/knjiga80/public_html/wp-includes/PHPMailer/PHPMailer.php(1857): PHPMailer\PHPMailer\PHPMailer->mailSend() #2 /home/knjiga80/public_html/wp-content/plugins/wp-mail-smtp/src/MailCatcherTrait.php(272): PHPMailer\PHPMailer\PHPMailer->postSend() #3 /home/knjiga80/public_html/wp-content/plugins/wp-mail-smtp/src/MailCatcherTrait.php(196): WPMailSMTP\MailCatcherV6->smtp_send() #4 /home/knjiga80/public_html/wp-includes/pluggable.php(628): WPMailSMTP\MailCatcherV6->send() #5 /home/knjiga80/public_html/wp-content/plugins/better-wp-security/core/lib/class-itsec-mail.php(898): wp_mail() #6 /home/knjiga80/public_html/wp-content/plugins/better-wp-security/core/modules/notification-center/class-notification-center.php(577): ITSEC_Mail->send() #7 /home/knjiga80/public_html/wp-content/plugins/better-wp-security/core/notify.php(213): ITSEC_Notification_Center->send() #8 /home/knjiga80/public_html/wp-includes/class-wp-hook.php(353): ITSEC_Notify->send_daily_digest() #9 /home/knjiga80/public_html/wp-includes/plugin.php(206): WP_Hook->apply_filters() #10 /home/knjiga80/public_html/wp-content/plugins/better-wp-security/core/modules/notification-center/class-notification-center.php(855): apply_filters() #11 /home/knjiga80/public_html/wp-content/plugins/better-wp-security/core/modules/notification-center/class-notification-center.php(796): ITSEC_Notification_Center->send_scheduled_notification() #12 /home/knjiga80/public_html/wp-content/plugins/better-wp-security/core/modules/notification-center/class-notification-center.php(766): ITSEC_Notification_Center->send_scheduled_notifications() #13 /home/knjiga80/public_html/wp-content/plugins/better-wp-security/core/modules/notification-center/class-notification-center.php(722): ITSEC_Notification_Center->check_notification_schedule_accurate() #14 /home/knjiga80/public_html/wp-includes/class-wp-hook.php(353): ITSEC_Notification_Center->check_notification_schedule_fast() #15 /home/knjiga80/public_html/wp-includes/class-wp-hook.php(377): WP_Hook->apply_filters() #16 /home/knjiga80/public_html/wp-includes/plugin.php(523): WP_Hook->do_action() #17 /home/knjiga80/public_html/wp-settings.php(779): do_action() #18 /home/knjiga80/public_html/wp-config.php(102): require_once('/home/knjiga80/...') #19 /home/knjiga80/public_html/wp-load.php(50): require_once('/home/knjiga80/...') #20 /home/knjiga80/public_html/wp-blog-header.php(13): require_once('/home/knjiga80/...') #21 /home/knjiga80/public_html/index.php(17): require('/home/knjiga80/...') #22 {main} thrown in /home/knjiga80/public_html/wp-includes/PHPMailer/PHPMailer.php on line 894