Showing Error in Adduser.js please help me

import { Component } from "react"; import axios from "axios"; import { Redirect } from "react-router-dom"; import { withAuth0 } from "@auth0/auth0-react"; import Spinner from '../Spinner/Spinner'

class AddUser extends Component{

constructor(props){
    super(props)
    this.state={
        loading: false,
        done: false,
        server: process.env.REACT_APP_SERVER_URL || ''
    }
}

addUserToDB = () => {
    const { user, isLoading } = this.props.auth0

    if(!isLoading && !this.state.done){
        const userID = user.sub

        axios.get(this.state.server+`/api/users/exists/${userID}`)
            .then(res => {
                if (!res.data){ // user is not in the DB, lets create a new user
                    const newUser = {
                        identifier: userID,
                        fav_movies: [],
                        email: user.email
                    };
                    axios.post(this.state.server+`/api/users/create`, newUser)
                        .then( () => {
                            console.log('added user')
                        })
                }
            })
            .then( () => {
                this.setState({done: true})
            })
    }
}

componentDidUpdate = () => {
    const { isLoading } = this.props.auth0

    if (isLoading || (!this.state.done && !this.state.loading) ){
        this.setState({loading: true}, () => {
            (this.addUserToDB())
        })
    }
}

render(){       
    if (this.state.done) {
        return(<Redirect to='/'/>);
    }
    else{
        return(<Spinner />)
    }
}

}

export default withAuth0(AddUser);

//Error

slukic0 / movies-app

Showing Error in Adduser.js please help me #15