Fatal error: Uncaught Error: Call to undefined function PHPMailer\PHPMailer\mail() in /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-includes/PHPMailer/PHPMailer.php:894
Stack trace:
#0 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-includes/PHPMailer/PHPMailer.php(2143): PHPMailer\PHPMailer\PHPMailer->mailPassthru('sylvain@landat....', 'compta.sylvainl...', '\r\n<html>\r\n<head...', 'Date: Wed, 11 N...', NULL)
#1 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-includes/PHPMailer/PHPMailer.php(1857): PHPMailer\PHPMailer\PHPMailer->mailSend('Date: Wed, 11 N...', '\r\n<html>\r\n<head...')
#2 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-includes/PHPMailer/PHPMailer.php(1670): PHPMailer\PHPMailer\PHPMailer->postSend()
#3 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-includes/pluggable.php(628): PHPMailer\PHPMailer\PHPMailer->send()
#4 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-content/plugins/security-malware-firewall/security-malware-firewall.php(1742): wp_mail(Array, 'compta.sylvainl...', '\n<html>\n<head>\n...', Array)
#5 [internal function]: spbc_send_daily_report(Array)
#6 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-content/plugins/security-malware-firewall/lib/CleantalkSP/Common/Cron.php(135): call_user_func('spbc_send_daily...', Array)
#7 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-content/plugins/security-malware-firewall/lib/CleantalkSP/Common/Cron.php(57): CleantalkSP\Common\Cron->runTasks()
#8 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-content/plugins/security-malware-firewall/lib/CleantalkSP/SpbctWP/Cron.php(76): CleantalkSP\Common\Cron->execute()
#9 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-content/plugins/security-malware-firewall/lib/CleantalkSP/SpbctWP/Cron.php(114): CleantalkSP\SpbctWP\Cron::runTick(1)
#10 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-content/plugins/security-malware-firewall/security-malware-firewall.php(238): CleantalkSP\SpbctWP\Cron::handleSkippedTick()
#11 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-includes/class-wp-hook.php(353): {closure}('')
#12 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-includes/class-wp-hook.php(377): WP_Hook->apply_filters(Object(RegenerateThumbnails), Array)
#13 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-includes/plugin.php(523): WP_Hook->do_action(Array)
#14 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-settings.php(779): do_action('init')
#15 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-config.php(99): require_once('/home/httpd/vho...')
#16 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-load.php(50): require_once('/home/httpd/vho...')
#17 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-blog-header.php(13): require_once('/home/httpd/vho...')
#18 /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/index.php(17): require('/home/httpd/vho...')
#19 {main}
  thrown in /home/httpd/vhosts/sylvainlandat.ch/compta.sylvainlandat.ch/wp-includes/PHPMailer/PHPMailer.php on line 894