Error-"Unable to authorize access because the client configuration is invalid: invalid_request".
I'm trying to integrate Adobe Sign into our application. I found a step-by-step manual to do this (https://www.adobe.io/apis/documentcloud/sign/docs.html#!adobedocs/adobe-sign/master/gstarted.md).
So, I created an Application and configured OAuth access for it. I configured my application to handle HTTPS requests. I created a request to get the access token according to the documentation, and used the appropriate Client ID and redirect URI, but I got an error message: "Unable to authorize access because the client configuration is invalid: invalid_request".
The problem could be that it runs on my development machine which is not accessible from internet. I tried to use tools such as ngrok, Serveo or Pagekite that redirect the requests from outside to a local PC, but it still dosn't work.
Can you advise me how to solve this issue, please? Thanks in advance.
