Multi tool use

Alamofire Multipart is not working in XCode 9.4.1

When I've upgrade my XCode version to 9.4.1, Alamofire Multipart is not working and I don't know why. It was completely working in previous XCode version.

9.4.1

Please let me know how to fix it. Thanks

Alamofire.upload(
multipartFormData: { multipartFormData in
multipartFormData.append(self.imageFrontData, withName: "front-photo", fileName: "front-photo.png", mimeType: "image/png")
multipartFormData.append(self.imageBackData, withName: "back-photo", fileName: "back-photo.png", mimeType: "image/png")
for (key, value) in parameters {
multipartFormData.append((value?.data(using: String.Encoding.utf8)!)!, withName: key)
}
}, usingThreshold: UInt64.init(), to: uploadURL!, method: .post, headers: headers) { (result) in
switch result {
case .success(let upload, _, _):
upload.responseJSON { response in
print("Succesfully uploaded")
if let err = response.error{
print("err (err.localizedDescription)")
}
}
case .failure(let encodingError):

}
}


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