Redirect to 404 page, if the path alias doesn't exist

Question

I am developing a multilingual site in Drupal 8. I added content in Turkish and I didn't create any translation for that node.
I managed to redirect user to the path alias. For example, when users visit https://example.com/tr/node/123, they are redirected to https://example.com/tr/custom-node-in-turkish.

When users visit https://example.com/node/123 or https://example.com/ar/node/123, they should be redirected to the 404 page.

How can I achieve this in Drupal 8?

Answer 1

You could add the redirect to the .htaccess file.

Redirect 301 /ar/node/123 /page-not-found

Answer 2

How did you managed to redirect users to the page alias? Maybe you could use:

throw new \Symfony\Component\HttpKernel\Exception\NotFoundHttpException();