Object of class GuzzleHttp\Psr7\Request could not be converted to string

Question

I've got an issue for laravel 5.4 when I trying to using guzzleHttp. here is my code.

use GuzzleHttp\Client;
$url = 'http://example.com';
$client = new Client();

$parameter = ['query' => ['name' => 'xxx', 'address' => 'yyy'], 'headers' => [ 'User-Agent' => 'xxxx', 'exceptions' => false, 'timeout' => 10 ]];
$res = $client->request('GET', $url, $parameter);

if ($res->getStatusCode() == 200)
{
 $json = (string)$res->getBody();
 return $json;
}

and I've got this error on log: Error Exception: Object of class GuzzleHttp\Psr7\Request could not be converted to string

what is wrong with my code? please kindly help me. fyi, this error not always happen. sometimes it show this error, sometimes success.

thank you

Solution

$json = $res->getBody()->getContents();

try this