From 82a2cb0381ad3d112b243090ca1b8992bfdde1f7 Mon Sep 17 00:00:00 2001
From: liuhong <liuhong@easycorp.ltd>
Date: Thu, 15 Dec 2022 06:51:55 +0000
Subject: [PATCH] * Fix bug #30897.

---
 module/story/view/affected.html.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/module/story/view/affected.html.php b/module/story/view/affected.html.php
index aafa1adf88..23f1651269 100644
--- a/module/story/view/affected.html.php
+++ b/module/story/view/affected.html.php
@@ -11,7 +11,7 @@ if(isset($twins))
     <li class='active'><a data-toggle='tab' href='#affectedProjects'><?php echo $lang->story->affectedProjects;?> <?php $count = count($story->executions); if($count > 0) echo "<span class='label label-danger label-badge label-circle'>" . $count . "</span>" ?></a></li>
     <li><a data-toggle='tab' href='#affectedBugs'><?php echo $lang->story->affectedBugs;?> <?php $count = count($story->bugs); if($count > 0) echo "<span class='label label-danger label-badge label-circle'>" . $count . "</span>" ?></a></li>
     <li><a data-toggle='tab' href='#affectedCases'><?php echo $lang->story->affectedCases;?> <?php $count = count($story->cases); if($count > 0) echo "<span class='label label-danger label-badge label-circle'>" . $count . "</span>" ?></a></li>
-    <li><a data-toggle='tab' href='#affectedTwins'><?php if(count($twins) > 0) echo $lang->story->affectedTwins;?> <?php if(count($twins) > 0) echo "<span class='label label-danger label-badge label-circle'>" . count($twins) . "</span>" ?></a></li>
+    <li><a data-toggle='tab' href='#affectedTwins'><?php if(isset($twins) and count($twins) > 0) echo $lang->story->affectedTwins;?> <?php if(isset($twins) and count($twins) > 0) echo "<span class='label label-danger label-badge label-circle'>" . count($twins) . "</span>" ?></a></li>
   </ul>
   <div class='tab-content'>
     <div class='tab-pane active' id='affectedProjects'>