[Theme Horse Support Team]

Hi nuruddinctg1990,
Example to unhook the page 404:

unhook functions

// Unhook default Thematic functions
function unhook_thematic_functions() {
    // Don't forget the position number if the original function has one

remove_action( 'interface_404_content', 'interface_display_404_page_content', 10 );

}
add_action('init','unhook_thematic_functions'); // removes the header content by using hook interface_header

add_action( 'interface_404_content', 'interface_child_display_404_page_content', 10 );
/**
 * function to show the footer info, copyright information
 */
 
 
function interface_child_display_404_page_content() {      ?>   
<div id="content">
		<header class="entry-header">
			<h1 class="entry-title"><?php _e( 'Error 404-Page NOT Found', 'interface' ); ?></h1>
		</header>
		<div class="entry-content clearfix" >
			<p>Thank you</p> 
		</div><!-- .entry-content -->
	</div><!-- #content -->
  <?php 
}

You may also search in forum how to unhook the parent code.
For example:-
https://www.themehorse.com/support-forum/topic/child-theme-404-page-and-search-page-styling/
If you are still unable then you may hire a developer to fix it.

This below code must be defined under business page Template. If you want to display it in your own style/ design then you need to hire a developer
<?php the_content();?>

Thank you!