Warning: require_once(include/db.php): Failed to open stream: No such file or directory in C:\xampp\htdocs\livechat\config.php on line 15

Fatal error: Uncaught Error: Failed opening required 'include/db.php' (include_path='.;C:\php\pear') in C:\xampp\htdocs\livechat\config.php:15 Stack trace: #0 C:\xampp\htdocs\livechat\index.php(15): require_once() #1 {main} thrown in C:\xampp\htdocs\livechat\config.php on line 15