Laravel/Guzzle Issue

Hello guys i have an issue when trying to use guzzle in laravel and i have spent ages trying to google it and research what the problem could be. This is a very simple get request for WHM/Cpanel api

$client = new Client();
$res = $client->request('GET', 'https://delta.cloudns.io:2087/json-api/accountsummary…', [
'auth' => [ 'username','passowrd']
]);

Now i get a 200 status for the request but i am not getting any data back and in the network tab on firefox/chrome tools the page is showing as a error 500.

The code above i put into the index of my controller. I have tested the username and password and url in postman and it works correctly and i get back the data i expect.

Any help would greatly appreciated. Thanks

via Chebli Mohamed