Warning: PHP Startup: Filename cannot be empty in /autoinstalator/wordpress4/wp-load.php(2) : runtime-created function on line 1

Fatal error: Uncaught Error: Call to undefined function wp() in /autoinstalator/wordpress4/wp-blog-header.php:16 Stack trace: #0 /autoinstalator/wordpress4/index.php(20): require() #1 {main} thrown in /autoinstalator/wordpress4/wp-blog-header.php on line 16