Wordpress custom comment form

functions.php

<?php
	/**
	 * Comment form hidden fields
	 */
	function comment_form_hidden_fields()
	{
		comment_id_fields();

		if ( current_user_can( 'unfiltered_html' ) )
		{
			wp_nonce_field( 'unfiltered-html-comment_' . get_the_ID(), '_wp_unfiltered_html_comment', false );
		}
	}

wordpress-custom-comment-form.php

<?php
	$comments = get_comments( array(
		'post_id'	=> get_the_ID(),
		'status'	=> 'approve'
	) );
?>

<div id="comments">

	<h3><?php echo count($comments) ?> Comments</h3>

	<?php WPTheme::comment_form_unapproved() ?>

	<?php if ( count($comments) ) : ?>

		<ol class="base comment-list">
			<?php foreach ( $comments as $comment ) : ?>
				<li id="comment-<?php echo $comment->comment_post_ID ?>">
					<div class="comment">
						<h6 class="comment-title"><?php echo $comment->comment_author ?> said:</h6>
						<p class="comment-date">
							Posted on <time datetime="<?php echo $comment->comment_date ?>" itemprop="datePublished"><?php echo date('d.m.Y', strtotime($comment->comment_date) ) ?></time>
							at <?php echo date('H:i', strtotime($comment->comment_date) ) ?>
						</p>
						<div class="comment-body">
							<?php echo $comment->comment_content ?>
						</div>
					</div>
				</li>
			<?php endforeach ?>
		</ol>

	<?php else : ?>

		<p>
			There are no responses to this article, why not be the first?
		</p>

	<?php endif ?>

	<?php if ( comments_open() ) : ?>

		<form action="<?php echo site_url('/wp-comments-post.php') ?>" method="post">
			<ul class="form-collection">
				<?php if ( is_user_logged_in() ) : ?>
					<li>
						<span class="field-hint">Logged in as <?php echo get_user_option('user_nicename') ?></span>
					</li>
				<?php else : ?>
					<li>
						<label for="comment-author" class="field-label">Name</label>
						<input type="text" name="author" id="comment-author" required />
					</li>
					<li>
						<label for="comment-email" class="field-label">Email</label>
						<input type="email" name="email" id="comment-email" required />
					</li>
				<?php endif ?>
				<li>
					<label for="comment-body" class="field-label">Comment</label>
					<textarea name="comment" id="comment-body" required></textarea>
				</li>
				<?php if ( ! is_user_logged_in() ) : ?>
					<li>
						<label for="comment-query" class="field-label">20 - 15 + 7 =</label>
						<input type="text" name="result" id-"comment-query" required />
					</li>
				<?php endif ?>
				<li class="button-field">
					<button type="submit">Post comment</button>
					<?php comment_form_hidden_fields() ?>
				</li>
			</ul>
		</form>

	<?php else : ?>

		<hr />

		<p class="nocomments">
			Comments are closed for this article.
		</p>

	<?php endif ?>

</div>

i have problem with your code in my site https://filmr.ir/hamrafigh-series-download/