The file has 100 histories. And Code is like below:

                            $request = $this->service->files->export(
                                $item['file_id'],
                                $item['export_mime_type'],
                                [
                                    'alt' => 'media',
                                ]
                            );
                            $request = $request
                                ->withUri(new Uri($item->get('downloadUrl')))
                                ->withHeader('X-Php-Expected-Class', null);

“downloadrl” is exportedLink of google doc history. And This requests always return 429 unknown.
“This file might be unavailable right now due to heavy traffic”
Is there any ways to resolve it

I have tried to wait a few seconds. but finally it will return 400