Fatal error: Uncaught Error: Call to a member function hook() on null in /homepages/39/d696052602/htdocs/wp-content/themes/Gaming/header.php:8 Stack trace: #0 /homepages/39/d696052602/htdocs/wp-includes/template.php(722): require_once() #1 /homepages/39/d696052602/htdocs/wp-includes/template.php(671): load_template('/homepages/39/d...', true) #2 /homepages/39/d696052602/htdocs/wp-includes/general-template.php(41): locate_template(Array, true) #3 /homepages/39/d696052602/htdocs/wp-content/themes/Gaming/category.php(1): get_header() #4 /homepages/39/d696052602/htdocs/wp-includes/template-loader.php(78): include('/homepages/39/d...') #5 /homepages/39/d696052602/htdocs/wp-blog-header.php(19): require_once('/homepages/39/d...') #6 /homepages/39/d696052602/htdocs/index.php(17): require('/homepages/39/d...') #7 {main} thrown in /homepages/39/d696052602/htdocs/wp-content/themes/Gaming/header.php on line 8