Fatal error: Uncaught Error: Call to a member function parseHTML() on null in /home/calibredomains/public_html/wordpress/wp-content/themes/checkout/functions.php:823 Stack trace: #0 /home/calibredomains/public_html/wordpress/wp-content/themes/checkout/functions.php(958): WP_HTML_Compression->__construct('<!DOCTYPE html>...') #1 [internal function]: wp_html_compression_finish('<!DOCTYPE html>...', 9) #2 /home/calibredomains/public_html/wordpress/wp-includes/functions.php(4757): ob_end_flush() #3 /home/calibredomains/public_html/wordpress/wp-includes/class-wp-hook.php(292): wp_ob_end_flush_all('') #4 /home/calibredomains/public_html/wordpress/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters('', Array) #5 /home/calibredomains/public_html/wordpress/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #6 /home/calibredomains/public_html/wordpress/wp-includes/load.php(1072): do_action('shutdown') #7 [internal function]: shutdown_action_hook() #8 {main} thrown in /home/calibredomains/public_html/wordpress/wp-content/themes/checkout/functions.php on line 823