I am having trouble fixing this error message on my Swift Alamofire POST request (to login a user).

> 
> '3840' "Invalid value around character 1." 
> 
> 
> 

I have imported Foundation, **Alamofire**, **SwiftyJson**. There are no authorisation restrictions (no Oauth etc). I'm also getting the same error message when I change the Post (eg to another endpoint, with other parameters and values) but keep the rest of the code/format the same. On my drupal7 REST server 'definitions' it lists the endpoint as /rest/user/login and parameters as 'username' and 'password' strings as I've used.

I'd really appreciate any tips and help?

> 
> error calling REQUEST
>  Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around character 1." UserInfo={NSDebugDescription=Invalid value around character 1.} 
> 
> 
> 

This is my code 

```
 @IBAction func loginButtonTapped(sender: AnyObject) {

    //using Alamofire

    let dataEndpoint: String = "https://www.example.com/rest/user/login"
    let newData = ["username":"Mickey", "password":"123"]
    Alamofire.request(.POST, dataEndpoint, parameters: newData, encoding: .JSON)
        .responseJSON { response in
            guard response.result.error == nil else {
                // got an error in posting the data, need to handle it
                print("error calling REQUEST")
                print(response.result.error!)
                return
            }

            guard let value = response.result.value else {
                print("no result data  when calling request")
                return
            }
            let data = JSON(value)
            print("The result is: " + data.description)
    }

}

```

Thank you