Fatal error: Uncaught mysqli_sql_exception: Access denied for user 'root'@'localhost' (using password: NO) in /home3/uafpsmdg/f.ambr.ir/db.php:12 Stack trace: #0 /home3/uafpsmdg/f.ambr.ir/db.php(12): mysqli->__construct('127.0.0.1', 'root', '', 'laptop_service') #1 /home3/uafpsmdg/f.ambr.ir/index.php(3): require_once('/home3/uafpsmdg...') #2 {main} thrown in /home3/uafpsmdg/f.ambr.ir/db.php on line 12