Always "Entity not found: UNKNOWN"

[CODE-NINJA]

Invalid_auth_code trying to get the access token

Question: [Clearly ask your question.] What are you trying to achieve: [Explain the details of what you are trying to achieve. The more details you provide, the easier it is to understand what you need.] What have you already tried: I created a callback URL where I received the token when adding my app to my site, and received the token with success. With the token, I tried to get the access token using: curl -X POST \ https://www.wixapis.com/oauth/access \ -H 'Content-Type: applicati…