Fatal error: Uncaught Error: Call to undefined function gutenberg_block_template_part() in /home/cp34417/public_html/wp-content/themes/blockbase/header.php:16 Stack trace: #0 /home/cp34417/public_html/wp-includes/template.php(723): require_once() #1 /home/cp34417/public_html/wp-includes/template.php(672): load_template('/home/cp34417/p...', true) #2 /home/cp34417/public_html/wp-includes/general-template.php(41): locate_template(Array, true) #3 /home/cp34417/public_html/wp-content/themes/blockbase/404.php(8): get_header() #4 /home/cp34417/public_html/wp-includes/template-loader.php(106): include('/home/cp34417/p...') #5 /home/cp34417/public_html/wp-blog-header.php(19): require_once('/home/cp34417/p...') #6 /home/cp34417/public_html/index.php(17): require('/home/cp34417/p...') #7 {main} thrown in /home/cp34417/public_html/wp-content/themes/blockbase/header.php on line 16