Hi I follow instruction for installation in this way: <?php // index.php // Powered by SkyPHP (github.com/SkyPHP) # $down_for_maintenance = true; $my_project_path = 'C:/WebServer2/htdocs/codebases/app/'; $skyphp_codebase_path = 'C:/WebServer2/htdocs/codebases/skyphp/'; $codebase_path_arr = [ $my_project_path, $skyphp_codebase_path ]; // make sure this folder is writable $skyphp_storage_path = "C:/WebServer2/htdocs/storage/"; include $skyphp_codebase_path . 'sky.php'; I put index.php and htaccess on http://localhost/skyphp/ which are under "C:/WebServer2/htdocs/skyphp" But I have this error on browser: Server error! The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there was an error in a CGI script. If you think this is a server error, please contact the webmaster. Error 500 localhost Apache/2.4.4 (Win32) OpenSSL/1.0.1e PHP/5.5.3