Bugfix/state.age is not defined when mapping state to props app.js line: 19

[Rajesh-Royal]

Your code through runtime error that state.age is not defined.
To solve this when you mapStateToProps you could have passed some default value to the state.

here: -------

const mapStateToProps = (state = {age: 21}) => { 
return { age: state.age } 
};

Error stage Image: