From c26dce0e793059fc4cac73da8d4cd67abff42a04 Mon Sep 17 00:00:00 2001
From: Mark Nelson <markn@moodle.com>
Date: Sun, 27 Aug 2017 16:19:08 +0800
Subject: [PATCH] Fixed exception being thrown when deleted image is selected

---
 element/image/classes/element.php | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/element/image/classes/element.php b/element/image/classes/element.php
index 7458beb..6025b83 100644
--- a/element/image/classes/element.php
+++ b/element/image/classes/element.php
@@ -151,14 +151,15 @@ class element extends \mod_customcert\element {
         if (!empty($data->fileid)) {
             // Array of data we will be storing in the database.
             $fs = get_file_storage();
-            $file = $fs->get_file_by_id($data->fileid);
-            $arrtostore += [
-                'contextid' => $file->get_contextid(),
-                'filearea' => $file->get_filearea(),
-                'itemid' => $file->get_itemid(),
-                'filepath' => $file->get_filepath(),
-                'filename' => $file->get_filename(),
-            ];
+            if ($file = $fs->get_file_by_id($data->fileid)) {
+                $arrtostore += [
+                    'contextid' => $file->get_contextid(),
+                    'filearea' => $file->get_filearea(),
+                    'itemid' => $file->get_itemid(),
+                    'filepath' => $file->get_filepath(),
+                    'filename' => $file->get_filename(),
+                ];
+            }
         }
 
         return json_encode($arrtostore);