Language switcher only works when Artisan starts

I found an article on creating a multilingual laravel website here and it works like a charm.

But when I don't run php artisan serve

(for example in my hosting service) the language switch is redirected to "original_language / lang / destination_language" and gives me a 404 RouteNotFound:

NotFoundHttpException in RouteCollection.php line 179:
in RouteCollection.php line 179
at RouteCollection->match(object(Request)) in LanguageController.php line 
22
at LanguageController->switchLang(object(Request), 'fr')
at call_user_func_array(array(object(LanguageController), 'switchLang'), 
array('request' => object(Request), 'lang' => 'fr')) in Controller.php 
line 55
at Controller->callAction('switchLang', array('request' => 
object(Request), 'lang' => 'fr')) in ControllerDispatcher.php line 44
at ControllerDispatcher->dispatch(object(Route), 
object(LanguageController), 'switchLang') in Route.php line 204
at Route->runController() in Route.php line 160
at Route->run() in Router.php line 559

      

        
        
        
      

    

I have no idea where he is from. Here's my languageController.php method switchLang()

:

public function switchLang(Request $request, $lang)
{
    // Store the URL on which the user was
    $previous_url = url()->previous();

    // Transform it into a correct request instance
    $previous_request = app('request')->create($previous_url);

    // Get Query Parameters if applicable
    $query = $previous_request->query();

    // In case the route name was translated
    $route_name = app('router')->getRoutes()->match($previous_request)->getName();

    // Store the segments of the last request as an array
    $segments = $previous_request->segments();

    // Check if the first segment matches a language code
    if (array_key_exists($lang, config('translatable.locales'))) {

        // If it was indeed a translated route name
        if ($route_name && Lang::has('routes.'.$route_name, $lang)) {

            // Translate the route name to get the correct URI in the required language, and redirect to that URL.
            if (count($query)) {
                return redirect()->to($lang . '/' .  trans('routes.' . $route_name, [], $lang) . '?' . http_build_query($query));
            }

            return redirect()->to($lang . '/' .  trans('routes.' . $route_name, [], $lang));
        }

        // Replace the first segment by the new language code
        $segments[0] = $lang;

        // Redirect to the required URL
        if (count($query)) {
            return redirect()->to(implode('/', $segments).'?'.http_build_query($query));
        }

        return redirect()->to(implode('/', $segments));
    }

    return redirect()->back();
}

      

        
        
        
      

    

Hope it helps. Thank!

(I feel like this is a root / shared folder routing issue, but I can't find where)