代码一直报错

为啥我的就报错呢,代码和老师一模一样,Fatal error:  Uncaught LogicException: Function '\Mooc\Loader::autoLoad' not found (class '\Mooc\Loader' not found) in H:\IT\phpstudy_pro\WWW\Demo\index.php:5 Stack trace: #0 H:\IT\phpstudy_pro\WWW\Demo\index.php(5): spl_autoload_register('\\Mooc\\Loader::a...') #1 {main}  thrown in H:\IT\phpstudy_pro\WWW\Demo\index.php on line5

除了IMooc换成了Mooc,其他都一样,但就是运行不成功呢