Error in creating pdf file using google drive sdk

I am using google drive sdk for uploading files and also I think i can possibly create pdf file on it – so I tweak the code. So in my code, I generate HTML text format to be used as content for the PDF to be created in google drive.

this is a snip-it of my code.

$subcontent = "<h1>Hello World</h1><p>some text here</p>";
$file = new Google_DriveFile();
....
$mkFile = $this->_service->files->insert($file, array('data' => $subcontent));
$createdFile = $fileupload->nextChunk($mkFile, $subcontent); // I got error on this line
$this->_service->files->trash( $createdFile['id'] );

...

when I run the code I got an error based the comment I put in my code above:

Catchable fatal error: Argument 1 passed to Google_MediaFileUpload::nextChunk() must be an instance of Google_HttpRequest, array given, called in /home/site/public_html/mywp/wp-content/plugins/mycustomplugin/functions.php on line 689 and defined in /home/site/public_html/mywp/wp-content/plugins/mycustomplugin/gdwpm-api/service/Google_MediaFileUpload.php on line 212

I have no idea what should be the value in the 2nd parameter in nextChunk, in the original code it goes like this:

 .....
$handle = fopen($path, "rb");

                while (!$status && !feof($handle)) {

                    $max = false;

                    for ($i=1; $i<=$max_retries; $i++) {

                        $chunked = fread($handle, $chunkSize);

                        if ($chunked) {

                            $createdFile = $fileupload->nextChunk($mkFile, $chunked);

                            break;

                        }elseif($i == $max_retries){

                            $max = true;

                        }

                    }
.....

my question is that, how can I deal with this error? and how can I successfully create pdf file in google drive by tweaking this code? because I need the created file ID of the file to be linked in my post.

Thanks in advance…