Unable to fetch github users using redux - reactjs

Question

I am trying to fetch github users on providing username, but unable to
fetch. Can anyone tell what I am missing , as I see the code seem
perfect.
I am trying to fetch github users on providing username, but unable to
fetch. Can anyone tell what I am missing , as I see the code seem
perfect.
Below is my code for component, action, reducer
class Navbar extends Component {
constructor(props) {
super(props);
this.state = {
userName: ""
};
this.searchUser = this.searchUser.bind(this);
this.onChange = this.onChange.bind(this);
}
componentDidMount(){
console.log(this.props.users)
}
searchUser(e) {
e.preventDefault();
this.props.searchUser(this.state.userName);
this.setState({ userName: "" });
}
onChange(e) {
this.setState({ [e.target.id]: e.target.value }, () =>
console.log(this.state.userName)
);
}
render() {
return (
<nav className="navbar fixed-top navbar-expand-md navbar-light bg-primary">
<div className="container">
<h4>Github Search</h4>
<form className="form-inline my-1 my-lg-0" onSubmit={this.searchUser}>
<div className="input-group add-on">
<input
type="search"
className="form-control mr-sm-2 border-right-0 border"
id="userName"
placeholder="Search User..."
aria-label="Search"
onChange={this.onChange}
value={this.state.userName}
/>
</div>
</form>
</div>
</nav>
);
}
}
const mapStateToProps = state => {
return {
users: state.users
};
};
export default connect(
mapStateToProps,
{ searchUser }
)(Navbar);
-------------------------------------
export const searchUser = userName => dispatch => {
console.log("----" + userName);
fetch("https://api.github.com/search/users?q=" + userName)
.then(res => res.json())
.then(users =>
dispatch({
type: "FETCH_USERS",
payload: users.items
})
);
};
--------------------------------------------
export default function(state = { users: [] }, action) {
switch (action.type) {
case "FETCH_USERS":
return {
...state,
users: action.payload
};
default:
return state;
}
}
--------------------------------------------
I am able to pass submitted username to actions but after dispatch
there seem some error.