500 Internal Server Error

Attempt to read property "properties" on string (2)

#0 /var/www/fondazionemia.it/public_html/public/resourcecached.php(49): flight\Engine->handleError()
#1 /var/www/fondazionemia.it/public_html/public/cache.php(82): ResourceCached->{closure}()
#2 /var/www/fondazionemia.it/public_html/public/resourcecached.php(68): Cache::make()
#3 /var/www/fondazionemia.it/public_html/public/init-routing.php(54): ResourceCached->getPage()
#4 /var/www/fondazionemia.it/public_html/public/routing-fondazionemia.php(14): showPage()
#5 /var/www/fondazionemia.it/public_html/vendor/mikecao/flight/flight/core/Dispatcher.php(169): {closure}()
#6 /var/www/fondazionemia.it/public_html/vendor/mikecao/flight/flight/core/Dispatcher.php(145): flight\core\Dispatcher::callFunction()
#7 /var/www/fondazionemia.it/public_html/vendor/mikecao/flight/flight/Engine.php(339): flight\core\Dispatcher::execute()
#8 /var/www/fondazionemia.it/public_html/vendor/mikecao/flight/flight/core/Dispatcher.php(198): flight\Engine->_start()
#9 /var/www/fondazionemia.it/public_html/vendor/mikecao/flight/flight/core/Dispatcher.php(144): flight\core\Dispatcher::invokeMethod()
#10 /var/www/fondazionemia.it/public_html/vendor/mikecao/flight/flight/core/Dispatcher.php(49): flight\core\Dispatcher::execute()
#11 /var/www/fondazionemia.it/public_html/vendor/mikecao/flight/flight/Engine.php(92): flight\core\Dispatcher->run()
#12 /var/www/fondazionemia.it/public_html/vendor/mikecao/flight/flight/core/Dispatcher.php(198): flight\Engine->__call()
#13 /var/www/fondazionemia.it/public_html/vendor/mikecao/flight/flight/Flight.php(77): flight\core\Dispatcher::invokeMethod()
#14 /var/www/fondazionemia.it/public_html/index.php(99): Flight::__callStatic()
#15 {main}