message: trivial - add catch
diff: @@ -67,7 +67,11 @@ export class GraphFilter extends React.Component<GraphFilterProps, GraphFilterSt
  }
  componentDidMount() {
  - API.GetNamespaces().then(this.setNamespaces);
  + API.GetNamespaces()
  + .then(this.setNamespaces)
  + .catch(error => {
  + this.props.onError(error);
  + });
  }
  setNamespaces(response: any) {
  