Question
OAuth Auth Flow 405 Redirect Error
TLDR; I'm getting a 405 error on the redirect step after the authorize step. Trying to figure out why.
I'm following the instructions here (https://developer.zendesk.com/documentation/apps/app-developer-guide/using-the-apps-framework/#authorization-code-grant-flow ) and I'm essentially on the step where the application is in the install process and you just need to OAuth authenticate:

Locally on our dev auth server, I have the redirect uri set up to:
Along with the grant type being Authorization code and the Client ID/Secret.
In case you may be familiar with the stack: this is setup in django's rest oauth toolkit. If not, that's ok too, just dropping that bit in case it's useful to anyone else.
This leads to the issue I'm having. After the authorize screen (our own):

I get the following error from https://zis.zendesk.com/api/

This is where I'm quite stuck. I had thought that with it returning the code, aka the auth token, that I'd be in the green. Perhaps I'm missing something obvious. Please let me know.
