我收到.htaccess子文件夹错误 我有一个子文件夹localhost / folder /子文件夹/ 我的网站下的网站运行良好，但当我尝试打开子文件夹404页打开
RewriteEngine On
RewriteCond %{index} !-f
RewriteRule ^([^\.]+)$ $1.php [NC,L]
## EXPIRES CACHING ##
<IfModule mod_expires.c>
ExpiresActive On
ExpiresByType image/jpg "access 1 year"
ExpiresByType image/jpeg "access 1 year"
ExpiresByType image/gif "access 1 year"
ExpiresByType image/png "access 1 year"
ExpiresByType text/css "access 1 month"
ExpiresByType text/html "access 1 month"
ExpiresByType application/pdf "access 1 month"
ExpiresByType text/x-javascript "access 1 month"
ExpiresByType application/x-shockwave-flash "access 1 month"
ExpiresByType image/x-icon "access 1 year"
ExpiresDefault "access 1 month"
</IfModule>
## EXPIRES CACHING ##