Fatal error: Uncaught mysqli_sql_exception: Unknown database 'venus' in C:\xampp\htdocs\cvhvn\function.php:21 Stack trace: #0 C:\xampp\htdocs\cvhvn\function.php(21): mysqli_connect('localhost', 'root', Object(SensitiveParameterValue), 'venus') #1 C:\xampp\htdocs\cvhvn\function.php(13): System->connect_db() #2 C:\xampp\htdocs\cvhvn\autoload.php(8): System->__construct() #3 C:\xampp\htdocs\index.php(7): require_once('C:\\xampp\\htdocs...') #4 {main} thrown in C:\xampp\htdocs\cvhvn\function.php on line 21