Fatal error: Uncaught TypeError: Slim\Handlers\Strategies\RequestResponse::__invoke(): Return value must be of type Psr\Http\Message\ResponseInterface, int returned in /app/vendor/slim/slim/Slim/Handlers/Strategies/RequestResponse.php:39 Stack trace: #0 /app/vendor/slim/slim/Slim/Routing/Route.php(362): Slim\Handlers\Strategies\RequestResponse->__invoke(Object(Closure), Object(Nyholm\Psr7\ServerRequest), Object(Slim\Psr7\Response), Array) #1 /app/vendor/slim/slim/Slim/MiddlewareDispatcher.php(73): Slim\Routing\Route->handle(Object(Nyholm\Psr7\ServerRequest)) #2 /app/vendor/slim/slim/Slim/MiddlewareDispatcher.php(73): Slim\MiddlewareDispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #3 /app/vendor/slim/slim/Slim/Routing/Route.php(321): Slim\MiddlewareDispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #4 /app/vendor/slim/slim/Slim/Routing/RouteRunner.php(74): Slim\Routing\Route->run(Object(Nyholm\Psr7\ServerRequest)) #5 /app/vendor/slim/slim/Slim/MiddlewareDispatcher.php(73): Slim\Routing\RouteRunner->handle(Object(Nyholm\Psr7\ServerRequest)) #6 /app/vendor/slim/slim/Slim/App.php(209): Slim\MiddlewareDispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #7 /app/public/index.php(73): Slim\App->handle(Object(Nyholm\Psr7\ServerRequest)) #8 {main} thrown in /app/vendor/slim/slim/Slim/Handlers/Strategies/RequestResponse.php on line 39