Magento API calls for product information

I used the code below to get product information from magento store from my localhost

$proxy = new SoapClient('http://domain.com/magento/index.php/api/soap/?wsdl');

$sessionId = $proxy->login('username', 'apikey');
$filters = array(
    'sku' => array('like'=>'test%')
);

$products = $proxy->call($sessionId, 'product.list', array($filters));

var_dump($products);

It works on my localhost machine, but not on the server. But soap configuration is enabled on the server. Below is the error message

" SOAP-ERROR: WSDL analysis: could not find <definition> in "

I received the corresponding xml file when I used the URL http: //domainname/shoponline/index.php/api/soap/? Wsdl below

I deleted index.php but did not get any result.

$proxy = new SoapClient('http://domain.com/magento/index.php/api/soap/?wsdl');

The above expression shows the following error

Parsing WSDL: Couldn't find definitions in