From e38247449aa8b5fc41812c30d55a5d4b5aedbcec Mon Sep 17 00:00:00 2001
From: Marina Glancy <marina@moodle.com>
Date: Wed, 21 Apr 2021 16:19:21 +0200
Subject: [PATCH] MDL-71395 block_tag_youtube: sometimes exception may have
 empty message

---
 blocks/tag_youtube/edit_form.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/blocks/tag_youtube/edit_form.php b/blocks/tag_youtube/edit_form.php
index 75e5c0dc623..16a83077435 100644
--- a/blocks/tag_youtube/edit_form.php
+++ b/blocks/tag_youtube/edit_form.php
@@ -42,19 +42,21 @@ class block_tag_youtube_edit_form extends block_edit_form {
 
         // Category setting.
         $categorychoices = ['0' => get_string('anycategory', 'block_tag_youtube')];
+        $hascategoryerror = false;
         $categoryerror = '';
 
         try {
             // Get all video categories through an API call and add them to the category list.
             $categorychoices += $this->block->get_categories();
         } catch (Exception $e) {
+            $hascategoryerror = true;
             $categoryerror = $e->getMessage();
         }
         $mform->addElement('select', 'config_category', get_string('category', 'block_tag_youtube'),
             $categorychoices);
         $mform->setDefault('config_category', 0);
 
-        if ($categoryerror) {
+        if ($hascategoryerror) {
             $notification = $OUTPUT->notification(get_string('categoryerror', 'block_tag_youtube', $categoryerror),
                 'error');
             $mform->addElement('static', 'config_category_error', '', $notification);