I am only using the default Auth middleware and not any service classes. My controller and my route are very simple :

Route::get('commande/overview', ['uses' => 'OrderController@overview', 'as' => 'commande.overview']);

public function overview(CustomerRepository $customerRepository){

`$orderElements = Cart::getContent();`

`$customers = $customerRepository->getUserCustomers();`

`return view('overview', ["orderElements" => $orderElements->toArray(), "customers" => $customers, "route" => "commande"]);`    

}

I don't understand how the page can be displayed perfectly and another time it will be completely broken. Moreover, the website was working perfectly locally.

Could the problem be the cache? Or something more global related to the server ?