When I try to do a payment via sandbox I can log in to the buyer account but I'm getting an authorization error when redirecting to my application. The error is: Got Http response code 401 when accessing https://api.sandbox.paypal.com/v1/oauth2/token. {"error":"invalid_authz_code","error_description":"Authorization code not issued to RP" The clientID and secretKey are set properly. How can I fix this error?
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