Checkmk Werk 12546: Tags: Fix exception when changing existing tag ID

ID: 12546 Title: Tags: Fix exception when changing existing tag ID Component: Setup Level: 1 Class: Bug fix Version: 2.1.0i1 When changing the tag id of an already used tag and choose "Fix affected folders, hosts and rules" when saving those changes, the following exception appears: <tt>TypeError (isinstance() arg 2 must be a class, type, or tuple of classes and types)</tt>.