From bd311a89a16c87fceddab13fa75cb0d33e006c8a Mon Sep 17 00:00:00 2001
From: Isaac Bennetch <bennetch@gmail.com>
Date: Tue, 19 Jun 2018 12:17:32 -0400
Subject: [PATCH] Fix Uncaught TypeError in privilege editor

Fixes #14407

Signed-off-by: Isaac Bennetch <bennetch@gmail.com>
---
 libraries/classes/Server/Privileges.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libraries/classes/Server/Privileges.php b/libraries/classes/Server/Privileges.php
index 0a6472d861..bd91ee60ac 100644
--- a/libraries/classes/Server/Privileges.php
+++ b/libraries/classes/Server/Privileges.php
@@ -590,6 +590,7 @@ class Privileges
      */
     public function setUserGroup($username, $userGroup)
     {
+        $userGroup = is_null($userGroup) ? '' : $userGroup;
         $relation = new Relation();
         $cfgRelation = $relation->getRelationsParam();
         if (empty($cfgRelation['db']) || empty($cfgRelation['users']) || empty($cfgRelation['usergroups'])) {