Fatal error: Uncaught Error: Call to a member function hook() on null in /home/rockang6/public_html/web/wp-content/themes/Linco/header.php:8
Stack trace:
#0 /home/rockang6/public_html/web/wp-includes/template.php(704): require_once()
#1 /home/rockang6/public_html/web/wp-includes/template.php(653): load_template('/home/rockang6/...', true)
#2 /home/rockang6/public_html/web/wp-includes/general-template.php(41): locate_template(Array, true)
#3 /home/rockang6/public_html/web/wp-content/themes/Linco/single.php(1): get_header()
#4 /home/rockang6/public_html/web/wp-includes/template-loader.php(77): include('/home/rockang6/...')
#5 /home/rockang6/public_html/web/wp-blog-header.php(19): require_once('/home/rockang6/...')
#6 /home/rockang6/public_html/index.php(17): require('/home/rockang6/...')
#7 {main}
thrown in /home/rockang6/public_html/web/wp-content/themes/Linco/header.php on line 8