“Uncaught SyntaxError: Unexpected token T in JSON at position 0” Error in Ranger Web UI when adding new NiFi Repository

I have seen quite a few Ranger users who reported an issue that when trying to add a new NiFi repository within Ranger Web UI, the web page simply keeps Loading forever without returning anything. To re-produce, please see screenshots below: Firstly click on the + sign in the NIFI …