Couldn’t complete the connection An error occurred while validating the app authorization.

Developer Support APIs & Integrations
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1

Yesterday, I connected successfully (got the code and token) on my developer application. But today, I try to request and receive the response " Couldn’t complete the connection An error occurred while validating the app authorization."

Please help me. Thanks.

2

I found the problem. I typed the incorrect parameter, redirect_uri instead of the state (duplication redirect_uri => array parameter).