Fatal error: Uncaught Error: Call to a member function format() on boolean in /home/clients/0bf86a8cd8d0b0b1497682e97a6e78d7/web/module/Osr/src/Osr/Controller/IndexController.php:218 Stack trace: #0 /home/clients/0bf86a8cd8d0b0b1497682e97a6e78d7/web/vendor/zendframework/zendframework/library/Zend/Mvc/Controller/AbstractActionController.php(82): Osr\Controller\IndexController->calendarAction() #1 [internal function]: Zend\Mvc\Controller\AbstractActionController->onDispatch(Object(Zend\Mvc\MvcEvent)) #2 /home/clients/0bf86a8cd8d0b0b1497682e97a6e78d7/web/vendor/zendframework/zendframework/library/Zend/EventManager/EventManager.php(444): call_user_func(Array, Object(Zend\Mvc\MvcEvent)) #3 /home/clients/0bf86a8cd8d0b0b1497682e97a6e78d7/web/vendor/zendframework/zendframework/library/Zend/EventManager/EventManager.php(205): Zend\EventManager\EventManager->triggerListeners('dispatch', Object(Zend\Mvc\MvcEvent), Object(Closure)) #4 /home/clients/0bf86a8cd8d0b0b1497682e97a6e78d7/web/vendor/zendframework/zendframework/library/Zend/M in /home/clients/0bf86a8cd8d0b0b1497682e97a6e78d7/web/module/Osr/src/Osr/Controller/IndexController.php on line 218