I want to create label in gmail using google-api but i get error Token invalid - AuthSub token has wrong scope -

my client_id, secret_id, developer_key , redirect_uri auth request set in config file included. use following code create label in gmail account using google-api-php-client :-

<?php     error_reporting(e_all);     ini_set('display_errors', 1);      // set include path google php client library     set_include_path( get_include_path() . path_separator . 'google-api-php-client-master/src' );     require_once 'google-api-php-client-master/src/google/client.php';     $client = new google_client();      // call when redirect after callback google oauth     if (isset($_get['code']))      {         $client->authenticate($_get['code']);         $_session['access_token'] = $client->getaccesstoken();         if (isset($_session['access_token']) && $_session['access_token'])          {             $client->setaccesstoken($_session['access_token']);         }          $data = '<?xml version="1.0" encoding="utf-8"?>                    <atom:entry xmlns:atom="http://www.w3.org/2005/atom" xmlns:apps="http://schemas.google.com/apps/2006">                      <apps:property name="label" value="testcreatedbyapi" />                    </atom:entry>';          $headers = array(               "x-http-method-override: post",               "authorization: bearer $access_token",               "content-type: application/atom+xml"         );           $ch = curl_init();         curl_setopt($ch, curlopt_url, "https://apps-apis.google.com/a/feeds/emailsettings/2.0/google.com/{username}/label");         curl_setopt($ch, curlopt_httpheader, $headers);         curl_setopt($ch, curlopt_returntransfer, 1);         curl_setopt($ch, curlopt_postfields, $data);          print_r($response = curl_exec($ch));     }  $client->addscope("https://www.googleapis.com/auth/userinfo.email"); $client->addscope("https://mail.google.com");  $authurl = $client->createauthurl();  ?> 

this view section of code:

<div class="box">   <div class="request">     <?php if (isset($authurl)): ?>       <a class='login' href='<?php echo $authurl; ?>'>connect me!</a>     <?php else: ?>       <form id="url" method="get" action="<?php echo $_server['php_self']; ?>">         <input name="url" class="url" type="text">         <input type="submit" value="shorten">       </form>       <a class='logout' href='?logout'>logout</a>     <?php endif ?>   </div>    <?php if (isset($short)): ?>     <div class="shortened">       <?php var_dump($short); ?>     </div>   <?php endif ?> </div> 

i use add scope create label:

 $client->addscope("https://www.googleapis.com/auth/userinfo.email");  $client->addscope("https://mail.google.com"); 

i following error:

token invalid - authsub token has wrong scope error 401 

the right scope creating email label

https://apps-apis.google.com/a/feeds/emailsettings/2.0/

check out documentation here: https://developers.google.com/admin-sdk/email-settings/auth

and here:

https://developers.google.com/admin-sdk/email-settings/#manage_labels