on How To Setup Laravel Backup On Google Drive?

It looks like you're encountering issues due to missing imports or incorrect namespaces for the Google_Service_Drive and GoogleDriveAdapter classes. Here's how you can resolve this:

1. Correct Imports for Google_Service_Drive

Make sure that the Google_Service_Drive is properly imported from the Google API PHP Client library.

If you haven't already installed it, you need to include the Google Client library in your project:

composer require google/apiclient

Then, use the correct namespace:

use Google_Client;
use Google_Service_Drive;

2. Correct Import for GoogleDriveAdapter

For the GoogleDriveAdapter, ensure that you're using the correct namespace from the masbug/flysystem-google-drive-ext package.

Instead of:

use GoogleDriveAdapter;

You should import it like this:

use Masbug\Flysystem\GoogleDrive\GoogleDriveAdapter;

3. Full Example Code

After fixing the imports, your boot() method should look like this:

public function boot()
{
    \Storage::extend('google', function ($app, $config) {
        $client = new \Google_Client();
        $client->setClientId($config['clientId']);
        $client->setClientSecret($config['clientSecret']);
        $client->refreshToken($config['refreshToken']);
        $service = new \Google_Service_Drive($client);
        $adapter = new \Masbug\Flysystem\GoogleDrive\GoogleDriveAdapter($service, $config['folderId']);

        return new \League\Flysystem\Filesystem($adapter);
    });
}

4. Configuring the Service Provider

If you're still facing issues, double-check the configuration of your GoogleDriveServiceProvider. Ensure that the service provider is properly registered in config/app.php under the providers array:

'providers' => [
    // Other Service Providers

    App\Providers\GoogleDriveServiceProvider::class,
],

5. Folder ID Check

Make sure that the folderId in the $config['folderId'] is a valid Google Drive folder ID where you're planning to store the backups.

By following these steps, you should be able to resolve the issues you're encountering.