Warning: require_once(c_xml.class.php): Failed to open stream: No such file or directory in D:\Project\NextDEV\php\c_class\old\c_query.class.php on line 2

Fatal error: Uncaught Error: Failed opening required 'c_xml.class.php' (include_path='D:\xampp\php\PEAR') in D:\Project\NextDEV\php\c_class\old\c_query.class.php:2 Stack trace: #0 {main} thrown in D:\Project\NextDEV\php\c_class\old\c_query.class.php on line 2