Can't add a comment

Hello! I got a blog “verstandigmens.nl”. But when you write a comment on a article you get a error message “Error: please type a comment” (translated).

this is my comments.php data;

<?php
if (!empty($_SERVER['SCRIPT_FILENAME']) && 'comments.php' == basename($_SERVER['SCRIPT_FILENAME'])) :
	die (__('Please do not load this page directly. Thanks!','vbegy'));
endif;

if ( post_password_required() ) :
    ?><p class="no-comments"><?php _e("This post is password protected. Enter the password to view comments.","vbegy");?></p><?php
    return;
endif;

if ( have_comments() ) :?>
	<div id="comments" class="post">
		<div class="post-wrap">
			<div class="post-inner">
				<div class="post-title"><i class="fa fa-comments"></i><?php comments_number(__('Comments','vbegy'),__('Comment','vbegy'), __('Comments','vbegy'));?> <span>( <?php comments_number(__('No','vbegy'),__('1','vbegy'), __('%','vbegy'));?> )</span></div>
				<ol class="commentlist clearfix">
				    <?php wp_list_comments('callback=vbegy_comment');?>
				</ol><!-- End commentlist -->
				<div class="clearfix"></div>
			</div><!-- End post-inner -->
		</div><!-- End post-wrap -->
	</div><!-- End post -->

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

if ( comments_open() ) :
	if (vpanel_options("Ahmed") == "on") :comment_form();endif;?>

	<div id="respond" class="post">
		<div class="post-wrap">
			<div class="post-inner">
				<div class="post-title"><i class="fa fa-comment"></i><?php comment_form_title(__('Leave a reply','vbegy'),__('Leave a reply to %s','vbegy'));?></div>
				<form action="<?php echo esc_url(home_url('/'));?>/wp-comments-post.php" method="post" id="commentform">
					<div class="comment-form">
						<?php if ( is_user_logged_in() ) : ?>
						    <p><?php _e('Logged in as','vbegy')?> <a href="<?php echo get_option('siteurl');?>/wp-admin/profile.php"><?php echo esc_attr($user_identity);?></a>. <a href="<?php echo wp_logout_url(get_permalink());?>" title="Log out of this account"><?php _e('Log out &raquo;','vbegy')?></a></p>
						<?php else : ?>
							<div class="form-input">
								<i class="fa fa-user"></i>
								<input type="text" name="author" value="" id="comment_name" aria-required="true" placeholder="<?php _e('Your Name','vbegy');?>">
							</div>
							<div class="form-input">
								<i class="fa fa-envelope"></i>
								<input type="email" name="email" value="" id="comment_email" aria-required="true" placeholder="<?php _e('Email','vbegy');?>">
							</div>
							<div class="form-input">
								<i class="fa fa-home"></i>
								<input type="url" name="url" value="" id="comment_url" placeholder="<?php _e('URL','vbegy');?>">
							</div>
						<?php endif;

						$the_captcha = vpanel_options("the_captcha_comment");
						$captcha_style = vpanel_options("captcha_style");
						$captcha_question = vpanel_options("captcha_question");
						$captcha_answer = vpanel_options("captcha_answer");
						$show_captcha_answer = vpanel_options("show_captcha_answer");
						if ($the_captcha == "on") {
							echo "<div class='form-input logger_captcha_p clearfix'>
								<i class='fa fa-lock'></i>";
								if ($captcha_style == "question_answer") {
									echo "
									<div class='clearfix'></div>
									<input size='10' id='logger_captcha' name='logger_captcha' placeholder='".__("Captcha","vbegy")."' class='logger_captcha' value='' type='text'>
									<span class='form_desc logger_captcha_span'>".$captcha_question.($show_captcha_answer == "on"?" ( ".$captcha_answer." )":"")."</span>
									<div class='clearfix'></div>";
								}else {
									$rand = rand(0000,9999);
									echo "
									<div class='clearfix'></div>
									<input size='10' id='logger_captcha_".$rand."' placeholder='".__("Captcha","vbegy")."' name='logger_captcha' class='logger_captcha' value='' type='text'><img class='logger_captcha_img' src='".get_template_directory_uri()."/captcha/create_image.php' alt='".__("Captcha","vbegy")."' title='".__("Click here to update the captcha","vbegy")."' onclick=";echo '"javascript:logger_get_captcha';echo "('".get_template_directory_uri()."/captcha/create_image.php', 'logger_captcha_img_".$rand."');";echo '"';echo " id='logger_captcha_img_".$rand."'>
									<span class='form_desc logger_captcha_span'>".__("Click on image to update the captcha .","vbegy")."</span>
									<div class='clearfix'></div>";
								}
							echo "</div>";
						}
						?>
						<div class="form-input">
							<i class="fa fa-comment"></i>
							<textarea id="comment" name="comment" aria-required="true" placeholder="<?php _e('Comment','vbegy');?>"></textarea>
						</div>
						<div class="cancel-comment-reply"><?php cancel_comment_reply_link();?></div>
						<input name="submit" type="submit" id="submit" value="<?php _e('Post Comment','vbegy')?>" class="button-default">
						<?php comment_id_fields();?>
						<?php do_action('comment_form', $post->ID);?>
					</div>
					<div class="clearfix"></div>
				</form>
			</div><!-- End post-inner -->
		</div><!-- End post-wrap -->
	</div><!-- End post -->
<?php endif;?>

I found someone with a similar error message and the solution was this:
—————–
You’re missing name=”comment”

<textarea id=”comment” cols=”50″ rows=”7″ tabindex=”4″></textarea>

Replace with:

<textarea id=”comment” name=”comment” cols=”50″ rows=”7″ tabindex=”4″></textarea>
—————–

But I do have the “name=”comment”” so I don’t know what to do, any help?