I have created a Web application within Okta and am having difficulties getting a token.
The application is setup to use the Authorization Code grant type, but I am receiving the following error when attempting to request a token:
PKCE code verifier is required when the token endpoint authentication method is ‘NONE’.
I’m not sure how to create the code_verifier value for a web app. It’s also not indicated that it’s required for web apps in the documentation.
I am sending the Authorization: Basic with the encoded clientID and clientSecrect. Am I missing something?