Cannot access to Portal

Cannot connect to Server.Please configure your site url in provided config file.

Edited config.sample.php

protected static $data = array(
		//CRM URL without trialing/
		//Example: http://yourdomain.com/crm
		'crm.url' => 'http://mydemosite.com/vt71',

		//Portal URL without trialing/
		//Example: http://yourdomain.com/portal
		'portal.url' => 'http://mydemosite.com/vt71/customerportal',

		'crm.version' => '7.1.0', // Framework version for API
		'language' => 'en_us', // Default Language for API. Note : Changing the language here will not change the default/login language for Portal user.
		'layout' => 'default',
	);
```