( ! ) Fatal error: Uncaught TypeError: CTFF\WebApplication\Navigation\NavigationElement::hasSubNavigationKey(): Argument #1 ($navigationKey) must be of type string, null given, called in /var/www/app/vendor/twig/twig/src/Extension/CoreExtension.php on line 1996 and defined in /var/www/app/src/WebApplication/Navigation/NavigationElement.php:67 Stack trace: #0 /var/www/app/vendor/twig/twig/src/Extension/CoreExtension.php(1996): CTFF\WebApplication\Navigation\NavigationElement->hasSubNavigationKey(NULL) #1 /var/www/app/vendor/twig/twig/src/Environment.php(434) : eval()'d code(66): Twig\Extension\CoreExtension::getAttribute(Object(Twig\Environment), Object(Twig\Source), Object(CTFF\WebApplication\Navigation\NavigationElement), 'hasSubNavigatio...', Array, 'method', false, false, false, 11) #2 /var/www/app/vendor/twig/twig/src/Template.php(461): __TwigTemplate_1541891a787e8f13f12ffb48f91ab03e->doDisplay(Array, Array) #3 /var/www/app/vendor/twig/twig/src/Environment.php(434) : eval()'d code(113): Twig\Template->yield(Array) #4 /var/www/app/vendor/twig/twig/src/Template.php(461): __TwigTemplate_8f0f44b47a56b061b188711d48b49a07->doDisplay(Array, Array) #5 /var/www/app/vendor/twig/twig/src/Environment.php(434) : eval()'d code(49): Twig\Template->yield(Array, Array) #6 /var/www/app/vendor/twig/twig/src/Template.php(461): __TwigTemplate_794e848fa06c8a83e07daccd7ad81020->doDisplay(Array, Array) #7 /var/www/app/vendor/twig/twig/src/Template.php(416): Twig\Template->yield(Array, Array) #8 /var/www/app/vendor/twig/twig/src/Template.php(431): Twig\Template->display(Array) #9 /var/www/app/vendor/twig/twig/src/TemplateWrapper.php(53): Twig\Template->render(Array) #10 /var/www/app/vendor/twig/twig/src/Environment.php(343): Twig\TemplateWrapper->render(Array) #11 /var/www/app/src/Web/Router/TemplatedResponse.php(34): Twig\Environment->render('notfound.twig', Array) #12 /var/www/app/public/index.php(113): CTFF\Web\Router\TemplatedResponse->output() #13 {main} Next Twig\Error\RuntimeError: An exception has been thrown during the rendering of a template ("CTFF\WebApplication\Navigation\NavigationElement::hasSubNavigationKey(): Argument #1 ($navigationKey) must be of type string, null given, called in /var/www/app/vendor/twig/twig/src/Extension/CoreExtension.php on line 1996") in "inc/nav.twig" at line 11. in /var/www/app/assets/templates/inc/nav.twig on line 11
( ! ) Twig\Error\RuntimeError: An exception has been thrown during the rendering of a template ("CTFF\WebApplication\Navigation\NavigationElement::hasSubNavigationKey(): Argument #1 ($navigationKey) must be of type string, null given, called in /var/www/app/vendor/twig/twig/src/Extension/CoreExtension.php on line 1996") in "inc/nav.twig" at line 11. in /var/www/app/assets/templates/inc/nav.twig on line 11
Call Stack
#	Time	Memory	Function	Location
1	0.0000	426176	{main}()	.../index.php:0
2	0.0011	519664	CTFF\WebApplication\NotFound\NotFoundResponse->output()	.../index.php:113
3	0.0011	519760	Twig\Environment->render()	.../TemplatedResponse.php:34
4	0.0043	632864	Twig\TemplateWrapper->render()	.../Environment.php:343
5	0.0043	632864	__TwigTemplate_794e848fa06c8a83e07daccd7ad81020->render()	.../TemplateWrapper.php:53
6	0.0043	650016	__TwigTemplate_794e848fa06c8a83e07daccd7ad81020->display()	.../Template.php:431
7	0.0160	893216	__TwigTemplate_1541891a787e8f13f12ffb48f91ab03e->yield()	.../Template.php:416
8	0.0160	893216	__TwigTemplate_1541891a787e8f13f12ffb48f91ab03e->handleException()	.../Template.php:463