Fatal error: Uncaught Error: Call to undefined function get_the_block_template_html() in /var/www/vhosts/awxpokmt.host213.checkdomain.de/htdocs/playground/wordpress/wp-includes/template-canvas.php:12 Stack trace: #0 {main} thrown in /var/www/vhosts/awxpokmt.host213.checkdomain.de/htdocs/playground/wordpress/wp-includes/template-canvas.php on line 12