Uncaught Error: Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function but got: object

Question

I am getting this error:

Uncaught Error: Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/funct

Answer 1

https://github.com/rackt/react-router/blob/e7c6f3d848e55dda11595447928e843d39bed0eb/examples/query-params/app.js#L4 Router is also one of the properties of react-router. So change your modules require code like that:

  var reactRouter = require('react-router')
  var Router = reactRouter.Router
  var Route = reactRouter.Route
  var Link = reactRouter.Link

If you want to use ES6 syntax the link use(import), use babel as helper.

BTW, to make your code works, we can add {this.props.children} in the App, like

render() {
  return (
    

      
App
      

        
About
      
      {this.props.children}
    

  )
}