How we can give access or user permissions to a google docs link to share with others with PHP?

Question

I am trying to give user permissions to google docs file using php with google docs api but I am getting scopes error and permissions error. It is giving errors while using insert and create permissions methods. can you please share me the code, how to give user permission to the google docs file to share with others using PHP code and which type of scopes and services I have to use.

$fileId = $file->getId();
$role = 'writer';
$userEmail = '[email protected]';
$fileId = $file->getId();

$userPermission = new Google_Service_Drive_Permission(array(
  'type' => 'user',
  'role' => $role,
  'emailAddress' => $userEmail
));

$request = $service->permissions->create(
  $fileId, $userPermission, array('fields' => 'id')
);

getting is error-

An error occurred: {
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "insufficientPermissions",
    "message": "Insufficient Permission: Request had insufficient authentication scopes."
   }
  ],
  "code": 403,
  "message": "Insufficient Permission: Request had insufficient authentication scopes."
 }
}

This is my file-

<?php 
require __DIR__ . '/vendor/autoload.php';

if (php_sapi_name() != 'cli') {
    throw new Exception('This application must be run on the command line.');
}

/**
 * Returns an authorized API client.
 * @return Google_Client the authorized client object
 */
function getClient()
{
    $client = new Google_Client();
    $client->setApplicationName('Google Drive API PHP Quickstart');
    $client->setScopes([
        Google_Service_Drive::DRIVE_FILE,
        Google_Service_Drive::DRIVE,
        Google_Service_Drive::DRIVE_METADATA_READONLY]);
    $client->setAuthConfig('credentials.json');
    $client->setAccessType('offline');
    $client->setPrompt('select_account consent');

    // Load previously authorized token from a file, if it exists.
    // The file token.json stores the user's access and refresh tokens, and is
    // created automatically when the authorization flow completes for the first
    // time.
    $tokenPath = 'token.json';
    if (file_exists($tokenPath)) {
        $accessToken = json_decode(file_get_contents($tokenPath), true);
        $client->setAccessToken($accessToken);
    }

    // If there is no previous token or it's expired.
    if ($client->isAccessTokenExpired()) {
        // Refresh the token if possible, else fetch a new one.
        if ($client->getRefreshToken()) {
            $client->fetchAccessTokenWithRefreshToken($client->getRefreshToken());
        } else {
            // Request authorization from the user.
            $authUrl = $client->createAuthUrl();
            printf("Open the following link in your browser:\n%s\n", $authUrl);
            print 'Enter verification code: ';
            $authCode = trim(fgets(STDIN));

            // Exchange authorization code for an access token.
            $accessToken = $client->fetchAccessTokenWithAuthCode($authCode);
            $client->setAccessToken($accessToken);

            // Check to see if there was an error.
            if (array_key_exists('error', $accessToken)) {
                throw new Exception(join(', ', $accessToken));
            }
        }
        // Save the token to a file.
        if (!file_exists(dirname($tokenPath))) {
            mkdir(dirname($tokenPath), 0700, true);
        }
        file_put_contents($tokenPath, json_encode($client->getAccessToken()));
    }
    return $client;
}


// Get the API client and construct the service object.
$client = getClient();
$service = new Google_Service_Drive($client);

// Print the names and IDs for up to 10 files.
$optParams = array(
  'pageSize' => 10,
  'fields' => 'nextPageToken, files(id, name)'
);
$results = $service->files->listFiles($optParams);

if (count($results->getFiles()) == 0) {
    print "No files found.\n";
} else {
    print "Files:\n";
    foreach ($results->getFiles() as $file) {
        printf("%s (%s)\n", $file->getName(), $file->getId());
    }
}
$fileId = $file->getId();
// printf("%s",$fileId);

$newPermission = new Google_Service_Drive_Permission();
  $newPermission->setEmailAddress('[email protected]');
  $newPermission->setType('user');
  $newPermission->setRole('writer');
  try {
    return $service->permissions->create($fileId, $newPermission);
  } catch (Exception $e) {
    print "An error occurred: " . $e->getMessage();
  }
  return NULL;