Warning: require(vendor/autoload.php): Failed to open stream: No such file or directory in E:\www\plugin\PHPMailer\get_oauth_token.php on line 18

Fatal error: Uncaught Error: Failed opening required 'vendor/autoload.php' (include_path='.;C:/laragon/etc/php/pear') in E:\www\plugin\PHPMailer\get_oauth_token.php:18 Stack trace: #0 {main} thrown in E:\www\plugin\PHPMailer\get_oauth_token.php on line 18