I have this code

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

use GoogleClient;
use GoogleServiceGmail;

try {
    $client = new Google_Client();
    $client->setApplicationName('gmail_list');
    $client->setScopes(Google_Service_Gmail::GMAIL_READONLY);
    
    $client->setAuthConfig('mailer-422207-065dbb2195ea.json');
    // Path to your OAuth 2.0 credentials file
    
    // Authenticate with OAuth 2.0
    $client->fetchAccessTokenWithAssertion();
    
    $accessToken = $client->getAccessToken()['access_token']; 

    $service = new Google_Service_Gmail($client); 


    $userId = 'me'; 
   // echo "<pre>";print_r($service->users_messages);die();
    $messages = $service->users_messages->listUsersMessages($userId, ['q' => 'in:inbox']); 
    // Proceed with other operations...
} catch (Exception $e) {
    // Log or handle the error
    echo 'Error: ' . $e->getMessage();
}
?>

This code gives me error
Error: { “error”: { “code”: 400, “message”: “Precondition check failed.”, “errors”: [ { “message”: “Precondition check failed.”, “domain”: “global”, “reason”: “failedPrecondition” } ], “status”: “FAILED_PRECONDITION” } }
any one can help me that where i make mistake

Error: { “error”: { “code”: 400, “message”: “Precondition check failed.”, “errors”: [ { “message”: “Precondition check failed.”, “domain”: “global”, “reason”: “failedPrecondition” } ], “status”: “FAILED_PRECONDITION” } }