error while try to iterate Asana\Iterator\ItemIterator object

I use the Asana PHP package:

$results = $client->tasks->getTasks();

When I try to iterate over iterator that I get:

foreach($results as $result)
{
dd($result);
}

I got an error:

Asana\Errors\InvalidRequestError
Invalid Request
vendor/asana/asana/src/Asana/Errors/AsanaError.php:28

Can you help please?