I downloaded the sample code project 'SlothCreator' from here then exported a SlothCreator.doccarchive file. I placed the SlothCreator.doccarchive in /var/www/html/. I use Apache web server on CentOS 7. My .htaccess file is as follows. # Enable custom routing. RewriteEngine On # Route documentation and tutorial pages. RewriteRule ^(documentation|tutorials)\/.*$ SlothCreator.doccarchive/index.html [L] # Route files and data for the documentation archive. RewriteRule ^(css|js|data|images|downloads|favicon\.ico|favicon\.svg|img|theme-settings\.json|videos)\/.$ SlothCreator.doccarchive/$0 [L] # If the file path doesn't exist in the website's root ... RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d # ... route the request to that file path with the documentation archive. RewriteRule .* SlothCreator.doccarchive/$0 [L] I confirmed that the RewriteEngine works well. I try the following urls then see error message "An unknown error occurred." or "The page you’re looking for can’t be found." http://localhost/documentation/SlothCreator => "An unknown error occurred." http://localhost/SlothCreator.doccarchive/index.html => "The page you’re looking for can’t be found." Can I know what the problem is? Doesn't it work with CentOS?