Structured Data Errors In Webmaster Tool

single.php

Dear Sir,
I am unable to find "the_date();" and "the_author();" in single.php
and single.php code is:
<?php
if (in_category(ipin_blog_cats())) {
	get_template_part('single', 'blog');
} else {
	get_template_part('single', 'pin');
}
?>

Please check and let me know.
Thanks

@raymondware: please check the code??????

<?php get_header(); ?>

<div class="container">
    <div class="row">
        <div class="span9">
            <div class="row">
                <div id="double-left-column" class="span6 pull-right">
                    <?php while (have_posts()) : the_post(); ?>
                    <div id="post-<?php the_ID(); ?>" <?php post_class('post-wrapper'); ?>>
                        <div class="h1-wrapper">
                            <a href="<?php the_permalink(); ?>"><h1><?php the_title(); ?></h1></a>
                        </div>

                        <div class="post-meta-top">
                            <div class="pull-right"><a href="<?php the_permalink(); ?>#comments"><?php comments_number(__('0 Comments', 'ipin'), __('1 Comment', 'ipin'), __('% Comments', 'ipin'));?></a><?php edit_post_link(__('Edit', 'ipin'), ' | '); ?></div>
                            <div class="pull-left"><span class="post-date updated"><?php echo ipin_human_time_diff(get_post_time('U', true)); ?></span>/ <span class="vcard author post-author"><span class="fn"><?php the_author(); ?></span></span></div>
                        </div>

                        <?php
                        $imgsrc = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), 'large');
                        if ($imgsrc[0] != '') {
                        ?>
                        <div class="post-featured-photo">
                            <a href="<?php the_permalink(); ?>" target="_blank"><img class="featured-thumb" src="<?php echo $imgsrc[0]; ?>" alt="<?php the_title_attribute(); ?>" /></a>
                        </div>
                        <?php } ?>

                        <div class="post-content">
                            <?php
                            the_content();
                            wp_link_pages( array( 'before' => '<p><strong>' . __('Pages:', 'ipin') . '</strong>', 'after' => '</p>' ) );
                            ?>

                            <div class="clearfix"></div>

                            <div class="post-meta-category-tag">
                                <?php
                                $categories = get_the_category();
                                if($categories){
                                    echo __('Categories', 'ipin') . ' <span class="thetags">';

                                    foreach($categories as $category) {
                                        echo '<a href="'.get_category_link( $category->term_id ).'">'.$category->cat_name.'</a> ';
                                    }

                                    echo '</span>';
                                }

                                $posttags = get_the_tags();
                                if ($posttags) {
                                    echo __('Tags', 'ipin') . ' <span class="thetags">';

                                    foreach($posttags as $tag) {
                                        echo '<a href="' . get_tag_link($tag->term_id). '">' . $tag->name . '</a> '; 
                                    }

                                    echo '</span>';
                                }
                                ?>
                            </div>
                        </div>

                    </div>
                    <?php endwhile; ?>


                    <?php if(function_exists('wp_pagenavi')) { ?>
                        <div id="navigation" class="pagination pagination-centered">
                            <?php wp_pagenavi(); ?>
                        </div>
                    <?php } else { ?>
                        <div id="navigation-blog">
                            <ul class="pager">
                                <li class="previous"><?php next_posts_link(__('&laquo; Previous', 'ipin')) ?></li>
                                <li class="next"><?php previous_posts_link(__('Next &raquo;', 'ipin')) ?></li>
                            </ul>
                        </div>
                    <?php } ?>
                </div>

                <div id="single-right-column" class="span3">
                    <?php get_sidebar('left'); ?>
                </div>
            </div>
        </div>

        <div class="span3">
            <?php get_sidebar('right'); ?>
        </div>
    </div>
</div>

<?php get_footer(); ?>

Try that...