Edit Content Group

<header>
	<h1>Edit Content Group</h1>
	
Fatal error: Uncaught Error: Class "menu" not found in /volume1/web/packages/system/panels/cms/080_users/020_permissions/edit/group.tpl.php on line 4

Error: Class "menu" not found in /volume1/web/packages/system/panels/cms/080_users/020_permissions/edit/group.tpl.php on line 4

Call Stack:
    0.0001     360432   1. {main}() /volume1/web/packages/system/panels/cms/080_users/020_permissions/edit/group.tpl.php:0