redirect_uri is invalid

[greywidget]

I've been using my own CLI solution for mtd VAT since it came out, with a redirect uri of urn:ietf:wg:oauth:2.0:oob and it works fine.

I'm currently working on a Webserver based solution and I would like to redirect back to http://localhost:8000/authorise where I am currently running a Django Dev server during development.

On the Developer Hub I have defined a redirect uri of http://localhost:8000/authorise I keep getting a response of {"error":"invalid_request","error_description":"redirect_uri is invalid"}

In my application I have tried the following values for my redirect_url query parameter:

• Unencoded: http://localhost:8000/authorise
• urlencoded using urllib.parse.quote(): http%3A//localhost%3A8000/authorise
• urlencoded using urllib.parse.quote_plus(): http%3A%2F%2Flocalhost%3A8000%2Fauthorise

I have also tried accessing the url using curl and postman and get the same error.

I have also tried a bunch of other variations such as https (not supported natively by the Django Dev Sever) and urls which finish at the port e.g ...8000 and ...8000/

I'm not sure what else to try. I'd be grateful to find answers to the following questions:

1. Is my Develper Hub redirect url of http://localhost:8000/authorise valid?
2. Given 1, what exactly should I be passing for the query parameter.

Thanks kindly

[greywidget]

Sorry - User error... Too many Apps.