Hi, I am trying to generate billing agreement. I can generate billing agreement successfully using REST API. From response I get a URL for customer approval. But I always get error. Here is generic error code: UEFZRVJfQ0FOTk9UX1BBWQ%3D%3D Here is url for payment approval from client: https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=EC-5CG491604D090404S Please help me to fix this error
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