我有这样的错误：

传递给Symfony\Component\HttpFoundation\Request：：__construct（）的参数1必须是数组类型，给定字符串，在第68行的C：\xampp\htdocs\satusehat2\app\Http\Controllers\PasienController.php中调用。

这是我的职责

public function curl_postman() {
        $client = new Client();
        $headers = [
          'Content-Type' => 'application/json',
          'Authorization' => 'My Bearer token'
        ];
        $body = '';
        $request = new Request('GET', 'my-api-address', $headers, $body);
        $res = $client->sendAsync($request)->wait();
        echo $res->getBody();
        
    }

并且线68

$body = '';