I have created a controller class under a module directory in Symfony 4. My bundle's routing file references it. My root's routing file includes the bundle's routing file.
However I get an error 500, "Error: the controller does neither exist as service nor as class".
Why?
root/src/MyBundle/Resources/config/routing.YML
route_name: path: /test3 controller: MyBundle\Controller\ExportCsvController::exportProductInCsv options: expose: trueroot/config/routes/my_custom_routes.YML
route_name: resource: "@MyBundle/Resources/config/routing.yml" prefix: /root/src/MyBundle/Controller/ExportCsvController.PHP
<?phpnamespace MyBundle\Controller;use Symfony\Bundle\FrameworkBundle\Controller\Controller;use Symfony\Component\HttpFoundation\Response;use Symfony\Component\Routing\Annotation\Route;class ExportCsvController extends Controller{ public function exportProductInCsv(): Response { return new Response('<html><body>test</body></html>' ); }}