From d1b862c95d7c6c9236b0effa6867a324b31e9c07 Mon Sep 17 00:00:00 2001
From: christian <christian.fasanando@beeznest.com>
Date: Tue, 10 Oct 2023 17:37:06 -0500
Subject: [PATCH] Exercise: Fix error when object link is null  - refs BT#21109

---
 public/main/exercise/exercise.class.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/public/main/exercise/exercise.class.php b/public/main/exercise/exercise.class.php
index 81fa594fa2..157c1cf04a 100644
--- a/public/main/exercise/exercise.class.php
+++ b/public/main/exercise/exercise.class.php
@@ -6537,7 +6537,7 @@ class Exercise
         $course = api_get_course_entity($this->course_id);
         $link = $exercise->getFirstResourceLinkFromCourseSession($course);
 
-        if ($link->isDraft()) {
+        if ($link && $link->isDraft()) {
             $this->active = 0;
         }