The application could not run because of the following error:
#0 /customers/4/6/0/drtoon.be/httpd.www/index.php(16): Slim\Slim::handleErrors(2, 'Undefined prope...', '/customers/4/6/...', 16)#1 [internal function]: {closure}('{{n}}')#2 /customers/4/6/0/drtoon.be/httpd.www/lib/Slim/Route.php(468): call_user_func_array(Object(Closure), Array)#3 /customers/4/6/0/drtoon.be/httpd.www/lib/Slim/Slim.php(1357): Slim\Route->dispatch()#4 /customers/4/6/0/drtoon.be/httpd.www/lib/Slim/Middleware/Flash.php(85): Slim\Slim->call()#5 /customers/4/6/0/drtoon.be/httpd.www/lib/Slim/Middleware/MethodOverride.php(92): Slim\Middleware\Flash->call()#6 /customers/4/6/0/drtoon.be/httpd.www/lib/Slim/Middleware/PrettyExceptions.php(67): Slim\Middleware\MethodOverride->call()#7 /customers/4/6/0/drtoon.be/httpd.www/lib/Slim/Slim.php(1302): Slim\Middleware\PrettyExceptions->call()#8 /customers/4/6/0/drtoon.be/httpd.www/index.php(105): Slim\Slim->run()#9 {main}