I have changed the add on to now use html, JS and CSS like the example suggests in the github link above.
Once I have hit the `Submit` button i get presented with the above error whenever trying to navigate to the /inputs endpoint of my TA then the following error message comes up:
Internal configuration file error. Something wrong within the package or installation step. Contact your administrator for support. Detail: instance.pages.configuration.tabs.entity.type is not one of enum values: text,singleSelect,checkbox,multipleSelect,radio
Watching the logs on both the splunk side and the server side where the API call is being made. I see that the correct URL/domain and API key are being used because the request is going through correctly.
Also looking in the corresponding config file like so: