Fatal error: Call to a member function result() on a non-object

[WWW_9hub_Net]

I have this fatal error. Please help me know what is wrong.

 

 

Fatal error: Call to a member function result() on a non-object in C:\wamp\www\consumables\application\hooks\load_config.php on line 6

 

function load_config()
{
$CI =& get_instance();
foreach($CI->Appconfig->get_all()->result() as $app_config)
{
	$CI->config->set_item($app_config->key,$app_config->value);
}
}