为什么我把网站根目录配成public就文件访问就提示找不到文件了？

httpd-vhosts.conf的内容如下

# Virtual Hosts

#

<VirtualHost *:80>

ServerName localhost

DocumentRoot E:/GreenSoftware/wamp64/www/thinkphp/public

<Directory  "E:/GreenSoftware/wamp64/www/thinkphp/public/">

Options +Indexes +Includes +FollowSymLinks +MultiViews

AllowOverride All

Require local

</Directory>

</VirtualHost>

#

报错信息：

( ! ) Warning: require(E:\GreenSoftware\wamp64\www\thinkphp\public/../thinkphp/start.php): failed to open stream: No such file or directory in E:\GreenSoftware\wamp64\www\thinkphp\public\index.php on line 17

Call Stack

#

Time

Memory

Function

Location

1    0.0000    237896    {main}( )    ...\index.php:0    

( ! ) Fatal error: require(): Failed opening required 'E:\GreenSoftware\wamp64\www\thinkphp\public/../thinkphp/start.php' (include_path='.;C:\php\pear') in E:\GreenSoftware\wamp64\www\thinkphp\public\index.php on line 17

Call Stack

#

Time

Memory

Function

Location

1    0.0000    237896    {main}( )    ...\index.php:0