Create dynamic sub-domain as per username

I'm creating web application which needs dynamic domain per user.

Let say I've 5 users in my DB such as.

1) wanda
2) edward
3) rick
4) maurice
5) kristin

Now I've a domain as example.com.

I want to get data of that 5 users as per his domain.

1) wanda.example.com
2) edward.example.com
3) rick.example.com
4) maurice.example.com
5) kristin.example.com

route.php

Route::group(['domain' => '{user}.example.com'], function () {
   Route::get('/', function ($user) {
        echo $user;
        exit;
    });
});

I'm using Xampp, Apache server so I configure httpd-vhosts file as

C:\xampp\apache\conf\extra\httpd-vhosts

<VirtualHost *:80>
    DocumentRoot "C:/xampp/htdocs/myproject"
    ServerName example.com
    ServerAlias *.example.com
    DirectoryIndex index.php
    <directory "C:/xampp/htdocs/myproject">
        Options Indexes FollowSymLinks
        AllowOverride all
        Order Deny,Allow
        Deny from all
        Allow from all
    </directory>
</VirtualHost>

C:\Windows\System32\drivers\etc\hosts file

127.0.0.1   example.com  
127.0.0.1 *.example.com

When I access wanda.example.com I'm Getting this error.

via Chebli Mohamed