Thanks for your prompt response. I have tried the code on the content-single.php. The metadata for date and author name got duplicated. See how it looks here.
See the code I used below, I am not sure I did it correctly please help.
<header class="entry-header">
<?php
/**
* generate_before_entry_title hook.
*
* @since 0.1
*/
do_action( 'generate_before_entry_title' );
if ( generate_show_title() ) {
the_title( '<h1 class="entry-title" itemprop="headline">', '</h1>' );
}
/**
* generate_after_entry_title hook.
*
* @since 0.1
*
* @hooked generate_post_meta - 10
*/
do_action( 'generate_after_entry_title' );
?>
<?php
/**
* generate_after_entry_title hook.
*
* @since 0.1
*/
do_action( 'generate_after_entry_title' );?>
<div class="breadcrumbs" typeof="BreadcrumbList" vocab="https://schema.org/">
<?php if(function_exists('bcn_display'))
{
bcn_display();
}?>
</div>
</header><!-- .entry-header -->