Fatal error: Uncaught Error: Call to undefined function PHPMailer\PHPMailer\mail() in /home/reinehr/public_html/wp-includes/PHPMailer/PHPMailer.php:892 Stack trace: #0 /home/reinehr/public_html/wp-includes/PHPMailer/PHPMailer.php(2083): PHPMailer\PHPMailer\PHPMailer->mailPassthru() #1 /home/reinehr/public_html/wp-includes/PHPMailer/PHPMailer.php(1800): PHPMailer\PHPMailer\PHPMailer->mailSend() #2 /home/reinehr/public_html/wp-includes/PHPMailer/PHPMailer.php(1615): PHPMailer\PHPMailer\PHPMailer->postSend() #3 /home/reinehr/public_html/wp-includes/pluggable.php(625): PHPMailer\PHPMailer\PHPMailer->send() #4 /home/reinehr/public_html/wp-content/plugins/wp-defender/src/model/notification/class-tweak-reminder.php(210): wp_mail() #5 /home/reinehr/public_html/wp-content/plugins/wp-defender/src/model/notification/class-tweak-reminder.php(139): WP_Defender\Model\Notification\Tweak_Reminder->send_to_user() #6 /home/reinehr/public_html/wp-content/plugins/wp-defender/src/component/class-notification.php(525): WP_Defender\Model\Notification\Tweak_Reminder->send() #7 /home/reinehr/public_html/wp-includes/class-wp-hook.php(341): WP_Defender\Component\Notification->maybe_dispatch_report() #8 /home/reinehr/public_html/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters() #9 /home/reinehr/public_html/wp-includes/plugin.php(522): WP_Hook->do_action() #10 /home/reinehr/public_html/wp-content/plugins/wp-defender/src/component/class-network-cron-manager.php(237): do_action() #11 /home/reinehr/public_html/wp-content/plugins/wp-defender/src/component/class-network-cron-manager.php(217): WP_Defender\Component\Network_Cron_Manager->execute_callback() #12 /home/reinehr/public_html/wp-includes/class-wp-hook.php(341): WP_Defender\Component\Network_Cron_Manager->check_and_execute_callbacks() #13 /home/reinehr/public_html/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters() #14 /home/reinehr/public_html/wp-includes/plugin.php(522): WP_Hook->do_action() #15 /home/reinehr/public_html/wp-includes/load.php(1308): do_action() #16 [internal function]: shutdown_action_hook() #17 {main} thrown in /home/reinehr/public_html/wp-includes/PHPMailer/PHPMailer.php on line 892