Alamofire-responseSerializationFailed

Question

I really need help with this one. I'm trying to do POST request using Alamofire, but for some reason I'm always getting an error from the title. When I test in POSTMAN, I'm getting okay response. Here is screenshot from POSTMAN, just to get things clearer:

And this is how I'm calling this API in code:

let parameters: Parameters = [
        "data": [
            "action":"homeimages"
        ]
    ]

    print("Params: \(parameters)")

    Alamofire.request(Constants.API_URL_2, method: .post, parameters: parameters, encoding: JSONEncoding.default).responseJSON {
        response in
        print("Response: \(response)")
        switch response.result {
        case .success(let value):
            print("Response: \(value)")
            break
        case .failure(let error):
            print(error)
        }
    }

Answer 1

As far as I know responseserializationfailed error, mostly error with API itself however as you stated, you are getting response in POSTMAN please check below things :

1. URL(check small/caps well), parameters are correct(check caps and dictionary format as well)

2. Sometimes we don't need below (optional) parameter , delete this parameter and check

    encoding: JSONEncoding.default