Warning: include(../db.php): Failed to open stream: No such file or directory in C:\xampp\htdocs\disease\get_causes.php on line 2

Warning: include(): Failed opening '../db.php' for inclusion (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\disease\get_causes.php on line 2

Warning: Undefined variable $conn in C:\xampp\htdocs\disease\get_causes.php on line 7

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