Categories for Page Headers

Fatal error: Uncaught Error: Call to undefined function html5wp_pagination() in /home/sa/public_html/wp-content/themes/secondactchicago/pagination.php:3 Stack trace: #0 /home/sa/public_html/wp-includes/template.php(732): require() #1 /home/sa/public_html/wp-includes/template.php(676): load_template('/home/sa/public...', false, Array) #2 /home/sa/public_html/wp-includes/general-template.php(204): locate_template(Array, true, false, Array) #3 /home/sa/public_html/wp-content/themes/secondactchicago/category.php(11): get_template_part('pagination') #4 /home/sa/public_html/wp-includes/template-loader.php(106): include('/home/sa/public...') #5 /home/sa/public_html/wp-blog-header.php(19): require_once('/home/sa/public...') #6 /home/sa/public_html/index.php(17): require('/home/sa/public...') #7 {main} thrown in /home/sa/public_html/wp-content/themes/secondactchicago/pagination.php on line 3