Google Drive Api V3 File Copy Not Working - PHP

I'm trying to copy file from one drive to another. It works, if i use their official API console in the documentation but it fails with the following code.

<?php

require_once 'google-api-php-client/src/Google/Client.php';
require_once 'google-api-php-client/src/Google/Service.php';
require_once 'google-api-php-client/vendor/autoload.php';


$clientId = 'myClientId';
$clientSecret = 'mySecret';
$redirectUri = 'redirectUri';
$client = new Google_Client();

$client->setClientId($clientId);
$client->setClientSecret($clientSecret);
$client->setRedirectUri($redirectUri);
$client->setAccessType('offline');
        
$refreshToken = file_get_contents(__DIR__ . "/token.txt");
$client->refreshToken($refreshToken);

$tokens = $client->getAccessToken();
$client->setAccessToken($tokens);

$client->setDefer(true);
$service = new Google_Service_Drive($client);

$fileId = "DemoFileID"; // Google File ID


$file = new Google_Service_Drive_DriveFile();
$request = $service->files->copy($fileId, $file);
print_r($request);

I get the following error:

GuzzleHttp\Psr7\Request Object ( [method:GuzzleHttp\Psr7\Request:private] => POST
 [requestTarget:GuzzleHttp\Psr7\Request:private] => [uri:GuzzleHttp\Psr7\Request:private] => GuzzleHttp\Psr7\Uri Object ( [scheme:GuzzleHttp\Psr7\Uri:private] => https [userInfo:GuzzleHttp\Psr7\Uri:private] => [host:GuzzleHttp\Psr7\Uri:private] => www.googleapis.com 
[port:GuzzleHttp\Psr7\Uri:private] => [path:GuzzleHttp\Psr7\Uri:private] => /drive/v3/files/DemoFileID/copy [query:GuzzleHttp\Psr7\Uri:private] => [fragment:GuzzleHttp\Psr7\Uri:private] => ) 
[headers:GuzzleHttp\Psr7\Request:private] => Array ( [Host] => Array ( [0] => www.googleapis.com ) [content-type] => Array ( [0] => application/json ) [X-Php-Expected-Class] => Array ( [0] => Google_Service_Drive_DriveFile ) ) 
[headerNames:GuzzleHttp\Psr7\Request:private] => Array ( [content-type] => content-type [host] => Host [x-php-expected-class] => X-Php-Expected-Class ) [protocol:GuzzleHttp\Psr7\Request:private] => 1.1 [stream:GuzzleHttp\Psr7\Request:private] => )

Solution:

Works after commenting the line

$client->setDefer(true);

if anyone encounter same message like above. just change

$client->setDefer(true);

to

//$client->setDefer(true);