How to route subdomains in Laravel?

Question

htaccess

Hello.
I am learning Laravel and need to implement subdomain functionality. That is, so that when you go to the url subdomain1.learn.loc, the page displays: "This is Subdomain1"
Work on Open Server, the learn.loc folder is created
Base .htaccess file

<IfModule mod_rewrite.c>
    RewriteEngine On

    RewriteRule ^(.*)$ public/$1 [L]

</IfModule>

Here is the route file

Route::group(['domain' => '{subdomain}./learn.loc'], function(){
 return 'This is {subdomain}';
});

The page does not open. How to change htaccess and what settings to make to make it work? Thanks in advance for your reply.

Answer 1

https://laravel.com/docs/5.6/installation#pretty-urls
What is / doing here?