Fatal error: Uncaught TypeError: usort(): Argument #1 ($array) must be of type array, null given in /home/eckbtftqdd/domains/aquaparkreda.pl/public_html/project/class/aquaEvents.php:16 Stack trace: #0 /home/eckbtftqdd/domains/aquaparkreda.pl/public_html/project/class/aquaEvents.php(16): usort(NULL, Object(Closure)) #1 /home/eckbtftqdd/domains/aquaparkreda.pl/public_html/project/controllers/EventsController.php(12): aquaEvents::getData(Array) #2 /home/eckbtftqdd/domains/aquaparkreda.pl/public_html/app/class/core/cqController.php(53): EventsController->actionShow(Array) #3 /home/eckbtftqdd/domains/aquaparkreda.pl/public_html/app/class/core/cqRouter.php(34): cqController::__load('Events', 'Show', Array) #4 /home/eckbtftqdd/domains/aquaparkreda.pl/public_html/project/router.php(29): cqRouter->execute(Array) #5 /home/eckbtftqdd/domains/aquaparkreda.pl/public_html/app/index.php(40): require('/home/eckbtftqd...') #6 {main} thrown in /home/eckbtftqdd/domains/aquaparkreda.pl/public_html/project/class/aquaEvents.php on line 16