From 6e049bdbc6873eb652a4a1ed75d0cdc98e8733a6 Mon Sep 17 00:00:00 2001
From: Simey Lameze <simey@moodle.com>
Date: Mon, 1 Apr 2019 15:28:30 +0800
Subject: [PATCH] MDL-65050 core: add missing lib file include

---
 lib/classes/task/question_preview_cleanup_task.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/classes/task/question_preview_cleanup_task.php b/lib/classes/task/question_preview_cleanup_task.php
index 1044373c8f7..e307820d9a1 100644
--- a/lib/classes/task/question_preview_cleanup_task.php
+++ b/lib/classes/task/question_preview_cleanup_task.php
@@ -45,6 +45,8 @@ class question_preview_cleanup_task extends scheduled_task {
      * Throw exceptions on errors (the job will be retried).
      */
     public function execute() {
+        global $CFG;
+        require_once($CFG->dirroot . '/question/engine/lib.php');
 
         // We delete previews that have not been touched for 24 hours.
         $lastmodifiedcutoff = time() - DAYSECS;