gistfile1.txt

    handleFieldValueChange = (event) => {
        console.log(event.target.name) // displays the name of the field I'm typing in
        this.setState({[event.target.name]: event.target.value})
        
        this.setState(prevState => {
            console.log(event.target.name) //  throws error: TypeError: Cannot read property 'name' of null

            return {}
        })
    }