Warning: include_once(bootstrap.php): Failed to open stream: No such file or directory in C:\xampp\htdocs\index.php on line 2

Warning: include_once(): Failed opening 'bootstrap.php' for inclusion (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\index.php on line 2

Warning: include_once(inc-navbar.php): Failed to open stream: No such file or directory in C:\xampp\htdocs\index.php on line 3

Warning: include_once(): Failed opening 'inc-navbar.php' for inclusion (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\index.php on line 3

Warning: include_once(user.php): Failed to open stream: No such file or directory in C:\xampp\htdocs\index.php on line 4

Warning: include_once(): Failed opening 'user.php' for inclusion (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\index.php on line 4

Warning: Undefined variable $db in C:\xampp\htdocs\index.php on line 7

Fatal error: Uncaught Error: Call to a member function query() on null in C:\xampp\htdocs\index.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\index.php on line 7