Using AEM 6.5 SP1.  I followed the basic example here: Delegation Pattern for Sling Models · adobe/aem-core-wcm-components Wiki · GitHub The example extended the title component and overwrote the getText() method in a PageHeadline class.  Do you also need to override all the other get methods of the...

I found this same issue on an environment that had been updated from 6.0 to 6.2.  They had their own ACL permission package that was overriding several OOTB rep:policy including the one for /etc/tags. If the user tag-validation-service user does not have read access to /etc/tags, we get the same err...