WA starter kit: Watson discovery actions not loading

[yusufihmirza]

So I installed watson discovery custom extension from starter kit here by import openAPI which went successfully. I added the instance with API key.

Then I was trying to load the actions from here to which I get the below error:

Error message:

Error
can only contain word, underscore, hyphen or dot characters, and must not start with a prefix of "sys" or "system" or "user_defined_".
Transaction id: 5db4b02b-c929-4b5c-9a1b-045bf291f2ae

Any idea why is it failing? I am using a new instance of Watson assistant from IBM techzone so assuming it is running on the latest version. Perhaps some issue with version compatibility?

Thanks!