If that's your page, it may be because your getComponentById function in the onclick event is trying to get a component with the id "uploadedFile" but there isn't one defined. In your fileUpload component, add id="uploadedFile" and try that. You have set the name, not the id.

Your NewsGetItem method has two parameters, version and id, but the route you have defined for it only has one parameter, id. The parameter lists need to match up and be in the same order. Try taking the version parameter our of the NewsGetItem class method.

In this case, you'd probably have to create a class method in ObjectScript that changes the namespace, then call it using classMethodVoid() from the IRIS native SDK. But you'd have to make sure the necessary class method exists in all of the namespaces you want to change to and from, including %SYS.