laravel路由问题

为什么我在地址栏访问默认的路由没有问题 很正常，但是一旦访问自定义的路由就出现404报错：

Object not found!

The requested URL was not found on this server. If you entered the URL manually please check your spelling and try again.

If you think this is a server error, please contact the webmaster.

Error 404

www.book.com
Apache/2.4.18 (Unix) OpenSSL/1.0.2f PHP/7.0.2 mod_perl/2.0.8-dev Perl/v5.16.3