POST request failure with code -10001

Can someone tell me where the mistake is? And what the resone?

sub init()
    print "uriHandler.brs - [init]"

    m.port = createObject("roMessagePort")
    m.top.observeField("request", m.port)
    m.top.functionName = "go"
    m.top.control = "RUN"
    m.constants = CreateObject("roSGNode", "constants")

end sub


function go() as Void
    print "uriHandler.brs - [go]"

    while true

        msg = wait(0, m.port)
        mt = type(msg)

        if mt = "roSGNodeEvent"

            if msg.getField() = "request"

                if addRequest(msg.getData()) <> true then print "Invalid request"

            else

                print "Error: unrecognized field '"; msg.getField() ; "'"

            end if

        else if mt = "roUrlEvent"

            processResponse(msg)

        else

            print "Error: unrecognized event type '"; mt ; "'"

        end if

    end while

end function

 
function addRequest(request as Object) as Boolean
    print "uriHandler.brs - [addRequest]"

    if type(request) = "roAssociativeArray"

        context = request.context

        if type(context) = "roSGNode"

            parameters = context.parameters

            if type(parameters) = "roAssociativeArray"

                if parameters.lookUp("name") <> invalid
                   
                    print "DeviceID uri"
                    uri = m.constants.uri_get_deviceID

                else if parameters.lookUp("id") <> invalid

                    print "Token uri"
                    uri = m.constants.uri_get_token

                else

                    print "Error: unrecognized parameter"

                end if

            end if

            urlXfer = CreateObject("roUrlTransfer")
            urlXfer.setUrl(uri)
            ' print uri
            urlXfer.setPort(m.port)
            urlXfer.retainBodyOnError(true)
            byteArray = CreateObject("roByteArray")
            byteArray.fromAsciiString("test@test.com:1111")
            ' print byteArray.ToBase64String()
            urlXfer.addHeader("authorization", "Basic " + byteArray.ToBase64String())
            urlXfer.addHeader("Content-Type", "application/json")
            urlXfer.addHeader("Accept", "application/json")
            requestBody = formatJson({"name":"Roku"})
            ' urlXfer.setRequest("POST")
            ok = urlXfer.asyncPostFromString(requestBody)
            print ok

        end if

    end if

    return true

end function


sub processResponse(msg as Object)
    print "uriHandler.brs - [processResponse]"

    code = msg.getResponseCode()
    reason = msg.getFailureReason()

    print code
    print reason

end sub 

Output to the console:

login.brs - [init]
uriHandler.brs - [init]
uriHandler.brs - [go]
login.brs - [buttonPressed]
login.brs - [onKeyboardOKPressed]
login.brs - [buttonPressed]
login.brs - [onKeyboardOKPressed]
login.brs - [onConfirmPressed]
login.brs - [loginClient]
login.brs - [makeRequest]
uriHandler.brs - [addRequest]
DeviceID uri
true
uriHandler.brs - [processResponse]
-10001
Cancelled