Post-Update Fatal Error

Hello,

Hope you can assist. After the update I now have a deactivated Simply Schedule and on trying to re-activated I receive this error below:

Warning: require(/var/www/wptbox/wp-content/plugins/simply-schedule-appointments/includes/lib/td-health-check/health-check.php): failed to open stream: No such file or directory in /var/www/wptbox/wp-content/plugins/simply-schedule-appointments/simply-schedule-appointments.php on line 151

Thanks in advance.