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使用的官方sdk v3下单的报错签名错误,请问签名加在哪里

Client error: `POST https://api.mch.weixin.qq.com/v3/pay/transactions/jsapi` resulted in a `401 Unauthorized` response: {"code":"SIGN_ERROR","detail":{"detail":{"issue":"sign not match"},"field":"signature","location":"authorization","sign_ (truncated...) 401 Unauthorized {"code":"SIGN_ERROR","detail":{"detail":{"issue":"sign not match"},"field":"signature","location":"authorization","sign_information":{"method":"POST","sign_message_length":386,"truncated_sign_message":"POST\n/v3/pay/transactions/jsapi\n1673516732\nBmDeMJd2KTv6g0XqySrv5HlSt6y7amWk\n{\"mchid\"\n","url":"/v3/pay/transactions/jsapi"}},"message":"签名错误,请检查后再试" #0

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