The application could not run because of the following error:
#0 /var/www/html/vendor/slim/slim/Slim/CallableResolver.php(61): Slim\CallableResolver->assertCallable() #1 /var/www/html/vendor/slim/slim/Slim/CallableResolverAwareTrait.php(41): Slim\CallableResolver->resolve() #2 /var/www/html/vendor/slim/slim/Slim/Route.php(276): Slim\Routable->resolveCallable() #3 /var/www/html/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(117): Slim\Route->__invoke() #4 /var/www/html/vendor/slim/slim/Slim/Route.php(268): Slim\Route->callMiddlewareStack() #5 /var/www/html/vendor/slim/slim/Slim/App.php(503): Slim\Route->run() #6 /var/www/html/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(117): Slim\App->__invoke() #7 /var/www/html/vendor/slim/slim/Slim/App.php(392): Slim\App->callMiddlewareStack() #8 /var/www/html/vendor/slim/slim/Slim/App.php(297): Slim\App->process() #9 /var/www/html/boostrap/app.php(66): Slim\App->run() #10 /var/www/html/public/index.php(7): require('...') #11 {main}