微信退款查询，之前好使，现在报refundnotexist,请问发生这种错误的都有什么原因呢，订单号都对的，订单查询后是支付成功的状态，可就是退不了款，申请退款接口返回false，订单号：$wxre->SetOut_trade_no("20200910140238559658")， $wxre->SetTransaction_id("4200000696202009101351550416");退款查询接口返回：，array(9) { ["appid"]=> string(18) "wxe730aaf8d58*****" ["err_code"]=> string(14) "REFUNDNOTEXIST" ["err_code_des"]=> string(9) "not exist" ["mch_id"]=> string(10) "1587******" ["nonce_str"]=> string(16) "uhd7sXcpZ3fJBfsG" ["result_code"]=> string(4) "FAIL" ["return_code"]=> string(7) "SUCCESS" ["return_msg"]=> string(2) "OK" ["sign"]=> string(32) "7201EBF4BECB10EF4877F14C59D85112" }