Laravel 6, how to implement flash message during redirect?

Question

Laravel

In version 6 of Laravel, basic authorization is connected using After any action (Identification, registration, exit), a redirect occurs. It is required to add a Flash message after these steps. Implemented it, directly in But after all so it is not correct to do? I understand that with any update of laravel, everything can be overwritten and will no longer work? Then how to properly configure the output of Flash messages?
composer require laravel/ui --dev
Illuminate\Foundation\Auth\AuthenticatesUsers

Answer 1

Implemented this, directly in

you must not change ANYTHING in the vendor folder

It is required to add a Flash message after these steps.

Isn't there any examples of messages in Laravel out of the box? in any action at the end

return redirect()->route('you.rout')
            ->withFlashSuccess('ok');