From eab844788aa51ca96efc144d320e2b2eb74f2a0b Mon Sep 17 00:00:00 2001
From: NIU Administrator <cbs-is@ml.riken.jp>
Date: Mon, 19 Jul 2021 13:56:23 +0900
Subject: [PATCH] put empty string if custom fields not set.

---
 wpforo/layouts/2/topic.php | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/wpforo/layouts/2/topic.php b/wpforo/layouts/2/topic.php
index 4cbeeac..f1cf28a 100644
--- a/wpforo/layouts/2/topic.php
+++ b/wpforo/layouts/2/topic.php
@@ -35,14 +35,14 @@ $topic_custom_fields = cbsonline_wpforo_get_topic_custom_fields($topic['first_po
 			  
           <div class="topic-wrap <?php wpforo_unread($topic['topicid'], 'topic'); ?>">
               <div class="wpforo-topic">
-                  <div class="wpforo-topic-avatar"><div class="featured-image"><?php echo $topic_custom_fields['featured_image']; ?></div></div>
+                  <div class="wpforo-topic-avatar"><div class="featured-image"><?php echo $topic_custom_fields['featured_image'] ?? ''; ?></div></div>
                   <div class="wpforo-topic-info">
                     <p class="wpforo-topic-title"><a href="<?php wpforo_unread_url( $topic['topicid'], $topic_url ) ?>"><?php wpforo_topic_icon($topic); ?><?php echo esc_html($topic['title']) ?></a> <?php wpforo_unread_button($topic['topicid'], $topic_url); ?> <?php wpforo_viewing( $topic ); ?></p>
 		    <p class="wpforo-topic-custom_fields spearker">
-			<span class="label"><?php echo wpfval($topic_fields['speaker_name'], 'label'); ?></span><span class="value"><?php echo $topic_custom_fields['speaker_name']; ?>
+			<span class="label"><?php echo wpfval($topic_fields['speaker_name'], 'label'); ?></span><span class="value"><?php echo $topic_custom_fields['speaker_name'] ?? ''; ?>
                     </p>
 		    <p class="wpforo-topic-custom_fields host">
-			<span class="label"><?php echo wpfval($topic_fields['host'], 'label'); ?></span><span class="value"><?php echo $topic_custom_fields['host']; ?>
+			<span class="label"><?php echo wpfval($topic_fields['host'], 'label'); ?></span><span class="value"><?php echo $topic_custom_fields['host'] ?? ''; ?>
                     </p>
                   	<div class="wpforo-topic-badges"><?php wpforo_hook('wpforo_topic_info_end', $topic); ?></div>
                   </div>
@@ -51,7 +51,7 @@ $topic_custom_fields = cbsonline_wpforo_get_topic_custom_fields($topic['first_po
 				  <?php else: ?>
 				  		<div class="wpforo-topic-stat-lastpost"><?php wpforo_phrase('Replies not found') ?></div>
 				  <?php endif; ?>
-		  <div class="wpforo-topic-stat-views"><?php echo $topic_custom_fields['seminar_date']; ?><br /><?php echo $topic_custom_fields['seminar_time']; ?></div>
+		  <div class="wpforo-topic-stat-views"><?php echo $topic_custom_fields['seminar_date']; ?><br /><?php echo $topic_custom_fields['seminar_time'] ?? ''; ?></div>
                   <div class="wpforo-topic-stat-posts"></div>
                   <br class="wpf-clear">
               </div><!-- wpforo-topic -->