Fatal error: Uncaught Exception: Number of Guests cannot be null in Single Sailing Filter! in /var/www/html/pcl/sites/all/libraries/touristic_api/Scandio/TouristicApi/Core/Filter/SingleSailingFilter.php:77 Stack trace: #0 /var/www/html/pcl/sites/all/libraries/touristic_api/Scandio/TouristicApi/Core/Repository/SailingRepository.php(61): Scandio\TouristicApi\Core\Filter\SingleSailingFilter->getParams() #1 /var/www/html/pcl/sites/all/modules/custom/scandio_booking_process2/forms/booking_process_cabin_form.inc(125): Scandio\TouristicApi\Core\Repository\SailingRepository->getSailings(Object(Scandio\TouristicApi\Core\Filter\SingleSailingFilter)) #2 /var/www/html/pcl/includes/form.inc(844): scandio_booking_process2_cabin(Array, Array) #3 /var/www/html/pcl/includes/form.inc(351): drupal_retrieve_form('scandio_booking...', Array) #4 /var/www/html/pcl/includes/form.inc(131): drupal_build_form('scandio_booking...', Array) #5 /var/www/html/pcl/includes/menu.inc(527): drupal_get_form('scandio_booking...') #6 /var/www/html/pcl/index.ph in /var/www/html/pcl/sites/all/libraries/touristic_api/Scandio/TouristicApi/Core/Filter/SingleSailingFilter.php on line 77