A client running ISPConfig 18.104.22.168p9 constantly running issues when using the Resync Tool. After resync, constant session timeout on ISPConfig, Roundcube and all websites. After checking logs, the following occurs every minute or so: AH00170: caught SIGWINCH, shutting down gracefully Only remedy is to reboot or killall apache and php-fpm process. Perhaps anybody running into the same issue. Thank you.