Update from 1.11.x

public/main/inc/lib/notification.lib.php

@@ -528,6 +528,8 @@ class Notification extends Model
             'data' => [
                 'title' => $title,
                 'message' => $content,
+                'body' => $content,
+                'sound' => 'default',
             ],
             'notification' => [
                 'title' => $title,

public/main/lp/learnpath.class.php

@@ -4556,15 +4556,17 @@ class learnpath
                 $session = $em->getRepository('ChamiloCoreBundle:Session')->find($sessionId);
             }
 
-            $course = $courseRepo->find($courseId);
-
-            // Subscribed groups to a LP
-            $subscribedGroupsInLp = $itemRepo->getGroupsSubscribedToItem(
-                TOOL_LEARNPATH_CATEGORY,
-                $category->getId(),
-                $course,
-                $session
-            );
+            if ($courseId != 0) {
+                $course = $courseRepo->find($courseId);
+
+                // Subscribed groups to a LP
+                $subscribedGroupsInLp = $itemRepo->getGroupsSubscribedToItem(
+                    TOOL_LEARNPATH_CATEGORY,
+                    $category->getId(),
+                    $course,
+                    $session
+                );
+            }
 
             if (!empty($subscribedGroupsInLp)) {
                 $groups = array_column($groups, 'iid');