php – Error while loading wordpress site “Fatal error: Uncaught Error: Call to undefined function twentytwentyone_the_html_classes() in /home
I am facing fatal error while loading wordpress site.
Fatal error: Uncaught Error: Call to undefined function twentytwentyone_the_html_classes() in
……(here in the middle shows some links)…. and at the end it shows in bold
public_html/wp-content/themes/twentytwentyone/header.php on line 16
There has been a critical error on this website.
I am not experience in wordpress. I need to resolve this error.
here is my site URL https://ijazmedia.com/
I have tried to add below code in header.php file but it did not work.
<?php if (!defined('ABSPATH')) exit; get_header(); ?>
I am using parent theme. Any help will be much appreciated.