Fatal error: Uncaught Error: Call to undefined function wp() in D:\XAMPP\htdocs\irmnch2\wp-blog-header.php:16 Stack trace: #0 D:\XAMPP\htdocs\irmnch2\index.php(26): require() #1 {main} thrown in D:\XAMPP\htdocs\irmnch2\wp-blog-header.php on line 16