Fatal error: Uncaught Error: Class 'SlackMessage' not found in /var/www/html_monipla/modules/class/Notify/SlackMessageNotify.php:21 Stack trace: #0 /var/www/html_monipla/modules/common/Util.php(107): SlackMessageNotify->__construct('https://hooks.s...') #1 /var/www/html_monipla/modules/common/Util.php(867): Util::sendErrorToSlack(Object(Error)) #2 /var/www/html_monipla/doc_user_ac/log_in.php(116): Util::exceptionManage(Object(Error)) #3 {main} thrown in /var/www/html_monipla/modules/class/Notify/SlackMessageNotify.php on line 21