Warning: require_once(db.class.php): Failed to open stream: No such file or directory in D:\web\teleflex\tst\assets\library\php\ori\do.change.password.php on line 3

Fatal error: Uncaught Error: Failed opening required 'db.class.php' (include_path='C:\xampp\php\PEAR') in D:\web\teleflex\tst\assets\library\php\ori\do.change.password.php:3 Stack trace: #0 {main} thrown in D:\web\teleflex\tst\assets\library\php\ori\do.change.password.php on line 3