A valid React element (or null) must be returned. You may have returned undefined, an array or some other invalid object

Question

I\'m just new in ReactJS and I have a problem. I can\'t solve it. It seems everything is all right, but still console puts me:

A valid React element

Answer 1

When you are using ES6 syntax's make sure you do the following

const App = ()=> (
  

        
Adam
        
Alex
  
)

Here the "()" is important and it says the bracketed is the jsx returned

If you are having a single line return then you can do this

const App = ()=> 
Hello