Structured Data Errors

I use Karma Theme. I have added Single.php. How I can fix Structured Data Errors?

<?php get_header(); ?>
<?php
/*
* @since version 1.0
* modified @since 2.6 development
* use global variable $ttso
*/
global $ttso;
$ka_blogtitle = $ttso->ka_blogtitle;
$ka_searchbar = $ttso->ka_searchbar;
$ka_crumbs = $ttso->ka_crumbs;
$show_tools_panel = $ttso->ka_tools_panel;
?>
</div><!– header-area –>
</div><!– end rays –>
</div><!– end header-holder –>
</div><!– end header –>

<?php truethemes_before_main_hook();// action hook, see truethemes_framework/global/hooks.php ?>

<div id=”main”>
<div class=”main-area”>

<?php
/*
* Check to display or hide tools panel
* @since version 2.6 development
*/
if($show_tools_panel != ‘false’):
?>

<div class=”tools”>
<div class=”holder”>
<div class=”frame”>

<?php truethemes_before_article_title_hook();// action hook, see truethemes_framework/global/hooks.php ?>

<h1><?php echo $ka_blogtitle; ?></h1>
<?php if ($ka_searchbar == “true”){
//parent theme uses searchform.php
//create a file in child theme named searchform-childtheme.php to overwrite.
get_template_part(‘searchform’,’childtheme’);
} else {}
?>
<?php if ($ka_crumbs == “true”){ $bc = new simple_breadcrumb;} else {} ?>

<?php truethemes_after_searchform_hook();// action hook, see truethemes_framework/global/hooks.php ?>

</div><!– end frame –>
</div><!– end holder –>
</div><!– end tools –>

<?php endif; //end show tools panel check @since version 2.6 dev ?>

<div class=”main-holder”>
<div id=”content” class=”content_blog”>
<?php get_template_part(‘theme-template-part-content-blog-single’,’childtheme’); ?>
</div><!– end content –>

<div id=”sidebar” class=”sidebar_blog”>
<?php dynamic_sidebar(“Blog Sidebar”); ?>
</div><!– end sidebar –>
</div><!– end main-holder –>
</div><!– main-area –>
<?php get_footer(); ?>