comments problem in wordpress

hi mrs.i have a problem with comment in wordpress.i placed comment_template in my single page.in comment form when i click on submit button it guide me to search page and any comment does not exist.please see the video and help me. tnx all.

my comment file :

<?php

// Do not delete these lines
	if (!empty($_SERVER['SCRIPT_FILENAME']) && 'comments.php' == basename($_SERVER['SCRIPT_FILENAME']))
		die ('Please do not load this page directly. Thanks!');

	if ( post_password_required() ) { ?>
		<p class="nocomments">این مطلب خصوصی است.در صورتی که رمز آن را دارید در قسمت زیر وارد کنید.</p>
	<?php
		return;
	}
?>
<h3 id="comments"><?php	printf( _n( 'One Response to %2$s', '%1$s Responses to %2$s', get_comments_number() ),
number_format_i18n( get_comments_number() ), '“' . get_the_title() . '”' ); ?></h3>

<!-- You can start editing here. -->
<div class="comments" id="comment">
<?php if ( have_comments() ) : ?>

	<div class="navigation">
		<div class="alignleft"><?php previous_comments_link() ?></div>
		<div class="alignright"><?php next_comments_link() ?></div>
	</div>

	<ol class="commentlist">
	<?php wp_list_comments();//این کد دیگاه های نوشته شده را فراخوانی میکند ?>
	</ol>

	<div class="navigation">
		<div class="alignleft"><?php previous_comments_link() ?></div>
		<div class="alignright"><?php next_comments_link() ?></div>
	</div>
 <?php else : // this is displayed if there are no comments so far ?>

	<?php if ('open' == $post->comment_status) : ?>
		<!-- If comments are open, but there are no comments. -->

	 <?php else : // comments are closed ?>
		<!-- If comments are closed. -->
		<p class="nocomments">نظرات بسته شده است.</p>

	<?php endif; ?>
<?php endif; ?>

<?php if ('open' == $post->comment_status) : ?>
<br />
<div id="my-label">شما هم نظر خود را درمورد این پست به ما بگویید!</div><br />
<div id="respond">

<?php if ( get_option('comment_registration') && !$user_ID ) : ?>
<p>شما باید <a href="<?php echo get_option('siteurl'); ?>/wp-login.php?redirect_to=<?php echo urlencode(get_permalink()); ?>">وارد سایت شوید</a> تا بتوانید نظر دهید.</p>
<?php else : ?>

<form action="<?php echo get_option('siteurl'); ?>/wp-comments-post.php" method="post" id="commentform">

<?php if ( $user_ID ) : ?>

<p>وارد شده به نام <a href="<?php echo get_option('siteurl'); ?>/wp-admin/profile.php"><?php echo $user_identity; ?></a> ___ <a href="<?php echo wp_logout_url(get_permalink()); ?>" title="Log out of this account">برای خروج کلیک کنید </a></p>

<?php else : ?>

<p class="infirst"><label for="author"><small>نام <?php if ($req) echo "(لازم)"; ?></small></label>
<input type="text" name="author" id="author" value="<?php echo $comment_author; ?>" size="22" tabindex="1" <?php if ($req) echo "aria-required='true'"; ?> />
</p>
</br>

<p class="infirst"><label for="email"><small> ایمیل<?php if ($req) echo "(لازم)"; ?></small></label>
<input type="text" name="email" style="text-align:left" <?php if ($req) echo "aria-required='true'"; ?> />
</p>
</br>

<p class="infirst"><label for="url"><small>وبسایت</small></label>
<input type="text" style="text-align:left" name="url" id="url" value="<?php echo $comment_author_url; ?>" size="22" tabindex="3" />
</p>
</br>

<?php endif; ?>

<!--<p><small><strong>XHTML:</strong> You can use these tags: <code><?php echo allowed_tags(); ?></code></small></p>-->

<p id="comment-para"><textarea placeholder="لطفا دیدگاه خود را بنویسید" name="comment" id="comment" cols="100%" rows="10" tabindex="4"></textarea></p>

<p><input name="submit" type="submit" id="submit" tabindex="5" value="ثبت نظر" />

</p>
<?php do_action('comment_form', $post->ID); ?>

</form>

<?php endif; // If registration required and not logged in ?>
</div>

<?php endif; // if you delete this the sky will fall on your head ?>
</div>

my single file :

<?php
get_header();
?>
	<div class="content">
		<?php include 'rsidebar.php' ?>
		<div class="part2">
			<div class="main-content">
				<div class="main-content-title">
					<?php the_title() ?>
					<a class="fehrest-icon" id="main-content-icon" href="#"></a>
				</div>
				<figure id="single-con">
				<div class="addrass">
				<br/>
				<?php
				if(have_posts()){
				the_post();
				the_content();
				}
				comments_template();
			?>
 			</div>
			</figure>
		</div>

	</div>
<?php get_footer(); ?>

my function file :

<?php add_theme_support('menus');?>
<?php add_theme_support( 'post-thumbnails' );?>

please help me to solve this problem.thanks