Uncaught Invariant Violation: Objects are not valid as a React child (found: object with keys {}).

Uncaught Invariant Violation: Objects are not valid as a React child (found: object with keys {}). If you meant to render a collection of children, use an array instead.

in BreadCrumb (created by Connect(BreadCrumb))
    in Connect(BreadCrumb) (at Dashboard.js:607)
    in div (at Dashboard.js:606)
    in Dashboard (created by Connect(Dashboard))
    in Connect(Dashboard) (created by Form(Connect(Dashboard)))

Showing me error, sometimes showing sometimes not

in BreadCrumb.js i have used this like:

class BreadCrumb extends Component {

  render() {
    const { title, subpath, subpath2 } = this.props;
  return (
         <h3 className="text-themecolor">{title}</h3>
     );
  }
}

In Dashboard.js i have called this by

class Dashboard extends Component {

  render() {
    var title = "Dashboard", subpath = "Dashboard";
    return (
        <BreadCrumb title={title} subpath={subpath} />
        );
    }
}