Fixed an issue where the User Management dialog is not opening. Fixes #7173

docs/en_US/release_notes_6_6.rst

@@ -20,3 +20,4 @@ Bug fixes
 *********
 
 | `Issue #7124 <https://redmine.postgresql.org/issues/7124>`_ -  Fixed the schema diff issue where tables have different column positions and a column has a default value.
+| `Issue #7173 <https://redmine.postgresql.org/issues/7173>`_ -  Fixed an issue where the User Management dialog is not opening.

web/pgadmin/tools/user_management/static/js/user_management.js

@@ -202,7 +202,8 @@ define([
     // Callback to draw User Management Dialog.
     show_users: function() {
       if (!userInfo['is_admin']) return;
-      var Roles = [],
+      var self = this,
+        Roles = [],
         Sources = [];
 
       var UserModel = pgBrowser.Node.Model.extend({