Warning: require_once(E:/52pxw/include/db.class.php) [function.require-once]: failed to open stream: No such file or directory in E:\52pxw\course.php on line 9

Fatal error: require_once() [function.require]: Failed opening required 'E:/52pxw/include/db.class.php' (include_path='.;ROOT_PATH') in E:\52pxw\course.php on line 9