Fatal error: Uncaught mysqli_sql_exception: Unknown database 'laptop_billing_database' in D:\allsiteserver\itassets\db_config.php:8 Stack trace: #0 D:\allsiteserver\itassets\db_config.php(8): mysqli->__construct('localhost', 'root', Object(SensitiveParameterValue), 'laptop_billing_...') #1 D:\allsiteserver\itassets\index.php(3): require('D:\\allsiteserve...') #2 {main} thrown in D:\allsiteserver\itassets\db_config.php on line 8