打开RewriteEngine获取500服务器错误

I am trying to do some basic .htaccess file stuff and it will not allow me to use RewriteEngine On. Can anyone help?

Here is the .htaccess file

RewriteEngine On


RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-l

RewriteRule ^(.+)$ index.php?url=$1 [QSA, L]

I got it to work by changing the [QSA, L] to [QSA,L] removing the space worked!