Invalid value around character 0 in iPhone7(12.4.0)

Question

I have upload the image with some parameters with the multipart method, I have getting success response in iPhoneX (12.3.1) and in iPhone7 iOS(12.3.1, 12.4) getting error

(Alamofire.AFError.responseSerializationFailed(reason: Alamofire.AFError.ResponseSerializationFailureReason.jsonSerializationFailed(error: Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around character 0." UserInfo={NSDebugDescription=Invalid value around character 0.})))

I have use Alamofire with below configuration

Alamofire version: 4.7.2

Xcode version: 10.2.1

Swift version:4.2

Platform(s) running Alamofire: iOS 12.3

macOS version running Xcode: 10.14.5

 let url = "\(BASE_DOMAIN)/xxxx”

var headers: HTTPHeaders = [:]
if defaults.object(forKey: "authKey") == nil{
    headers = [
        "authKey":""
    ]
}else{
    headers = [
        "authKey":defaults.object(forKey: "authKey") as! String,
    ]
}

let sessionManager = Alamofire.SessionManager.default
sessionManager.session.configuration.timeoutIntervalForRequest = 300
sessionManager.upload(multipartFormData: { (multipartFormData) in
    let reqDic:NSDictionary = self.perpareRequestData(isCommisionCharge: false)

    print("product total key \(reqDic.allKeys)")
    let productName:String = reqDic["product_name"] as? String ?? ""
    multipartFormData.append(productName.data(using: String.Encoding.utf8)!, withName: "prodctname")
    multipartFormData.append("382".data(using: String.Encoding.utf8)!, withName: "productId")

    let productImage:NSArray = reqDic["product_img"] as? NSArray ?? []
    var productImageCount:Int = -1
    if productImage.count>0{
        for valueData in productImage {
            productImageCount = productImageCount+1
            let dt:Data = valueData as!Data
            let productName:String = reqDic["product_name"] as? String ?? ""
            let imageName:String = productName.trimmingCharacters(in: .whitespaces) + String(self.toMillis())
            multipartFormData.append(dt as Data, withName: "productImgData[\(productImageCount)]", fileName: imageName + ".jpg", mimeType: "image/*")

        }
    }else{

        let imageName:String = productName.trimmingCharacters(in: .whitespaces) + String(self.toMillis())
        multipartFormData.append("".data(using: String.Encoding.utf8)!, withName: "productImgData[\(productImageCount)]", fileName: imageName + ".jpg", mimeType: "image/*")

    }


}, usingThreshold: 0, to: url, method: HTTPMethod.post, headers: headers) { (result) in
    self.view.isUserInteractionEnabled = true
    //10000000000
    print(result)

    switch result {
    case .success(let upload, _, _):


        upload.responseJSON { response in

           print(response.result.description)   // result of response description
            print(response.result.error.debugDescription)   // result of response serialization

            if let JSON = response.result.value {
                print("JSON: \(JSON)")

                let dic:NSDictionary = JSON as! NSDictionary
                let isSuccess:Bool = dic["success"] as? Bool ?? false
                if isSuccess{

                    GlobalData.sharedInstance.showSuccessSnackBar(msg: dic["message"] as?String ?? "Your request completed successfully" )

                }else {
                    GlobalData.sharedInstance.showErrorSnackBar(msg: dic["message"] as?String ?? "Something went wrong" )

                }
            }
        }
    case .failure(let encodingError):
        GlobalData.sharedInstance.dismissLoader()
        GlobalData.sharedInstance.showErrorSnackBar(msg:"Something went wrong" )
        print(encodingError.localizedDescription)
    }


}
}