iKnowledge wordpress temam var fakat buna önizleme resmi alanı ekleyemedim bir türlü. Tema da ekleyeceğim yer Warrior Box Info alanı. Burada ki alanı silip yerine ön izleme resmini eklemek istiyorum. Acaba yardımcı olabilir misiniz?

<?php
/**
 * Theme Custom Functions
 *
 * Functions used in the theme
 */
 

/**
 * Warrior Menu
 *
 * Adding Home to Nav Menu
 */
add_filter('wp_nav_menu_items','add_home_link',10,2);
function add_home_link($items, $args) {
  global $shortname;

  if ( is_front_page() || is_home() ) :  $class = 'menu-item page-item-0 current-menu-item page_item current_page_item menu-item-0'; else: $class = 'menu-item page-item-0 page_item menu-item-0'; endif;
  
  if ( get_option($shortname.'_home_link') == "Yes" ) { 
  $homeMenuItem = '<li class="'.$class.'">'.$args->before.'<a href="'.home_url('/').'" title="Home">'.$args->link_before.'Home'.$args->link_after.'</a>'.$args->after.'</li>'."\n";
  } else {
  $homeMenuItem = '';
  }
  
  $items = $homeMenuItem . $items;
return $items;
}


/**
 * Warrior Post Info
 */
function warrior_post_info(){
?>

	<div class="meta clearfix">
		<span class="date"><?php the_time( get_option('date_format') .', '. get_option('time_format') ); ?></span>
		<span class="author"><?php _e('Posted by ', 'warrior'); the_author_posts_link(); ?></span>
		<span class="comment-count"><?php comments_popup_link( __( '0 Comment', 'warrior' ), __( '1 Comment', 'warrior' ), __( '% Comments', 'warrior' ), '', __( 'Comments are off', 'warrior' ) ); ?></span>
	</div>
<?php
}


/**
 * Warrior Comments
 *
 * Function to load comment list
 */
function warrior_comment_list($comment, $args, $depth) {
	$GLOBALS['comment'] = $comment;
	switch ( $comment->comment_type ) :
		case '' :
?>
			<li id="comment-<?php comment_ID() ?>" <?php comment_class(); ?>>
				<div class="comment-box clearfix">
					<div class="author">
						<?php comment_author_link(); ?>
						<?php echo get_avatar( $comment, 70 ); ?>
					</div>
					<div class="comment-body">
						<?php if ($comment->comment_approved == '0') : ?>
							<p class="moderate"><?php _e('Your comment is now awaiting moderation before it will appear on this post.', 'warrior');?></p>
						<?php endif; ?>
						<?php comment_text(); ?>
					</div>
					<div class="meta">
						<?php comment_date(); echo ' - '; comment_time(); ?>
						<?php echo comment_reply_link(array('before' => ' &ndash; ', 'after' => '', 'reply_text' => __('Reply', 'warrior'), 'depth' => $depth, 'max_depth' => $args['max_depth'] ));  ?>
						<?php edit_comment_link(__('Edit Comment', 'warrior'), ' &ndash; [', ']'); ?> 
					</div>
					<hr class="comment-line"/>
				</div>
<?php
		break;
		case 'pingback'  :
		case 'trackback' :
?>
			<li id="comment-<?php comment_ID() ?>" <?php comment_class(); ?>>
				<div class="comment-box clearfix">
					<div class="author">
						<a href="<?php comment_author_url()?>"><?php _e('Pingback', 'warrior'); ?></a>
					</div>
					<div class="comment-body">
						<?php comment_author(); ?>
					</div>
					<div class="meta">
						<?php comment_date(); echo ' - '; comment_time(); ?>
						<?php edit_comment_link(__('Edit Comment', 'warrior'), ' &ndash; [', ']'); ?> 
					</div>
					<hr class="comment-line"/>
				</div>
<?php
		break;
	endswitch;
}


/**
 * Warrior Box Info
 *
 * Function to display post info
 */
function warrior_box_info() { 
	global $post;
?>
	<div class="meta-box clearfix">
		<div class="publised">
			<p><?php printf( __( 'Published on %1$s by %2$s', 'warrior' ), get_the_time( get_option('date_format') ), get_the_author_link() ); ?></p>
			<?php if ( !is_page() ) { ?><p><?php _e( 'Filed under', 'warrior' ); ?> <?php the_category(', '); ?></p><?php } ?>
			<?php if ( the_modified_date('', '', '', false) ) { 
				echo '<p>' . sprintf( __( 'Last modified %s', 'warrior' ), the_modified_date( get_option('date_format'), '', '', false ) ) . '</p>';
			} ?>
            <?php if( is_single() || is_page() ) : ?>
            	<span class="print"><?php warrior_print_link(); ?></span>
            <?php endif; ?>
		</div>
		<div class="shared">
			<div class="post-rating"><?php warrior_post_rating($post->ID); ?></div>
			<p><?php printf( __( 'This article have been viewed %s times', 'warrior' ), warrior_page_view($post->ID) ); ?></p>
			<?php warrior_social_buttons(); ?>
		</div>
		<?php echo get_avatar($post->post_author, '70'); ?>
	</div>
<?php
}

/**
 * Warrior Social Buttons
 *
 * Function to shared post or page
 */
function warrior_social_buttons() {
	global $post;
?>
	<div class="share-button">
    
		<iframe src="http://www.facebook.com/plugins/like.php?href=<?php echo get_permalink($post->ID); ?>&amp;layout=button_count&amp;show_faces=true&amp;width=80&amp;action=like&amp;font&amp;colorscheme=light&amp;height=20" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:80px; height:20px; margin:0 5px 0 0;" allowTransparency="true"></iframe>
        
        <a href="https://twitter.com/share" class="twitter-share-button" data-url="<?php echo get_permalink($post->ID); ?>"  data-hashtags="ThemeWarrior">Tweet</a>
<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script>

		<!-- Place this tag where you want the +1 button to render -->
		<g:plusone size="medium"></g:plusone>
		
		<!-- Place this render call where appropriate -->
		<script type="text/javascript">
			(function() {
			var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
			po.src = 'https://apis.google.com/js/plusone.js';
			var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
			})();
		</script>
	</div>
<?php
}

// Set post rating option
update_option($shortname . '_post_rating', 'Yes');
?>
Düzeltme: <?php the_post_thumbnail(); ?> bu kodu ekledim oldu.