Gopay_plus_automatic payment processing

This issue indicates a fundamental failure in the `Gopay_plus_automatic` system's payment validation process. The 'Payment details not found' error, coupled with a 404 status, suggests either incorrect payment data submission, a transient backend issue, or a critical data retrieval problem. A 41-second elapsed time for failure points to significant processing delays before ultimate failure. This directly impacts user trust and transaction completion rates, signaling instability in core payment functionalities. Immediate investigation into the `payment/validate` endpoint's data handling and availability is required.