Fatal error: Uncaught Error: Call to undefined function is_blog_installed() in /www/htdocs/w014dfd3/gafox-blog.de/wp-includes/load.php:538 Stack trace: #0 /www/htdocs/w014dfd3/gafox-blog.de/wp-settings.php(140): wp_not_installed() #1 /www/htdocs/w014dfd3/gafox-blog.de/wp-config.php(83): require_once('/www/htdocs/w01...') #2 /www/htdocs/w014dfd3/gafox-blog.de/wp-load.php(37): require_once('/www/htdocs/w01...') #3 /www/htdocs/w014dfd3/gafox-blog.de/wp-blog-header.php(13): require_once('/www/htdocs/w01...') #4 /www/htdocs/w014dfd3/gafox-blog.de/index.php(17): require('/www/htdocs/w01...') #5 {main} thrown in /www/htdocs/w014dfd3/gafox-blog.de/wp-includes/load.php on line 538

Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'wp_ob_end_flush_all' not found or invalid function name in /www/htdocs/w014dfd3/gafox-blog.de/wp-includes/class-wp-hook.php on line 298