Problems with Web Services

[Jorge alejandro Mendoza torres]

I'm doing a Web Services using SOAP, but when I click a button, the
browser shows this message:

undefined method `parent' for
#<SOAP:arser:arseFrame::NodeContainer:0x715fd7c @node=nil>

And the error line is in => app/controllers/users_controller.rb:10:in
`alta':

8| def alta
9| client = ActionWebService::Client::Soap.new(SegurosApi,
"http://localhost:3000/seguros/api")
10| @service_output = client.alta(params[:file]) # Error
11| end

Anybody know why is the problem?


Thanks and greetings.