Fatal error: Uncaught Error: Call to undefined function twentynineteen_can_show_post_thumbnail() in /home/host1613166/dev-2-tech.ru/htdocs/chistopar/wp-content/themes/chistopar/template-parts/content/content-single.php:15 Stack trace: #0 /home/host1613166/dev-2-tech.ru/htdocs/chistopar/wp-includes/template.php(785): require() #1 /home/host1613166/dev-2-tech.ru/htdocs/chistopar/wp-includes/template.php(718): load_template('/home/host16131...', false, Array) #2 /home/host1613166/dev-2-tech.ru/htdocs/chistopar/wp-includes/general-template.php(204): locate_template(Array, true, false, Array) #3 /home/host1613166/dev-2-tech.ru/htdocs/chistopar/wp-content/themes/chistopar/single.php(24): get_template_part('template-parts/...', 'single') #4 /home/host1613166/dev-2-tech.ru/htdocs/chistopar/wp-includes/template-loader.php(106): include('/home/host16131...') #5 /home/host1613166/dev-2-tech.ru/htdocs/chistopar/wp-blog-header.php(19): require_once('/home/host16131...') #6 /home/host1613166/dev-2-tech.ru/htdocs/chistopar/index.php(17) in /home/host1613166/dev-2-tech.ru/htdocs/chistopar/wp-content/themes/chistopar/template-parts/content/content-single.php on line 15