Warning: mysqli::__construct(): (HY000/1045): Access denied for user 'root'@'localhost' (using password: NO) in C:\xampp\htdocs\chatbot\classes\DBConnection.php on line 18

Warning: mysqli::query(): Couldn't fetch mysqli in C:\xampp\htdocs\chatbot\classes\SystemSettings.php on line 16

Fatal error: Uncaught Error: Call to a member function fetch_assoc() on bool in C:\xampp\htdocs\chatbot\classes\SystemSettings.php:17 Stack trace: #0 C:\xampp\htdocs\chatbot\classes\SystemSettings.php(141): SystemSettings->load_system_info() #1 C:\xampp\htdocs\chatbot\config.php(9): require_once('C:\\xampp\\htdocs...') #2 C:\xampp\htdocs\chatbot\index.php(3): require_once('C:\\xampp\\htdocs...') #3 {main} thrown in C:\xampp\htdocs\chatbot\classes\SystemSettings.php on line 17