having issues running my react app locally - node.js

Question

I have added my backend to heroku and my frontend to netlify, however when I'm trying to run my app whether it is locally or via netlify I'm getting the below error message when logging in or/and registering:
Uncaught Error: Element type is invalid: expected a string (for
built-in components) or a class/function (for composite components)
but got: object. You likely forgot to export your component from the
file it's defined in, or you might have mixed up default and named
imports.
what am I missing?
see below my app.js and signin.js for the frontend:
here is my APP.JS
import React, {Component} from 'react';
// import Clarifai from 'clarifai';
import Navigation from './components/Navigation/Navigation';
import Logo from './components/Logo/Logo';
import ImageLinkForm from './components/ImageLinkForm/ImageLinkForm';
import FaceRecognition from './components/FaceRecognition/FaceRecognition';
import Rank from './components/Rank/Rank';
import Signin from './components/Signin/Signin';
import Register from './components/Register/Register';
import './App.css';
const intialState = {
input: '',
imageUrl: '',
box: {},
route: 'signin',
isSignedIn: false,
user: {
id: '',
name: '',
email: '',
entries: 0,
joined: ''
}
}
class App extends Component {
constructor() {
super();
this.state = intialState
}
loadUser = (data) => {
this.setState({user: {
id: data.id,
name: data.name,
email: data.email,
entries: data.entries,
joined: data.joined
}})
}
calculateFaceLocation =(data) => {
const clarifaiFace = data.outputs[0].data.regions[0].region_info.bounding_box;
const image = document.getElementById('inputimage');
const width = Number(image.width);
const height = Number(image.height);
return {
leftCol: clarifaiFace.left_col * width,
topRow: clarifaiFace.top_row * height,
rightCol: width - clarifaiFace.right_col * width,
bottomRow: height - clarifaiFace.bottom_row * height,
};
}
displayFaceBox = (box) => {
console.log(box)
this.setState({box: box});
}
onInputChange = (event) => {
this.setState({input: event.target.value})
}
onButtonSubmit = () => {
this.setState({imageUrl: this.state.input})
fetch('https://ancient-sea-46547.herokuapp.com/imageurl', {
method: 'post',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({
input: this.state.input
})
})
.then(response => response.json())
.then( response => {
if (response) {
fetch('https://ancient-sea-46547.herokuapp.com/image', {
method: 'put',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({
id: this.state.user.id
})
})
.then(response => response.json())
.then(count => {
this.setState(Object.assign(this.state.user, { entries: count}))
})
.catch(console.log)
}
this.displayFaceBox(this.calculateFaceLocation(response))
})
.catch(err => console.log(err));
}
onRouteChange = (route) => {
if (route === 'signout') {
this.setState(intialState)
} else if (route === 'home') {
this.setState({isSignedIn: true})
}
this.setState({route:route});
}
render() {
return (
<div className="App">
<Navigation isSignedIn={this.state.isSignedIn} onRouteChange={this.onRouteChange} />
{ this.state.route === 'home'
? <div>
<Logo />
<Rank
name={this.state.user.name}
entries={this.state.user.entries}/>
<ImageLinkForm
onInputChange={this.onInputChange}
onButtonSubmit={this.onButtonSubmit} />
<FaceRecognition box={this.state.box} imageUrl={this.state.imageUrl}/>
</div>
:(
this.state.route === 'signin'
?<Signin loadUser={this.loadUser} onRouteChange={this.onRouteChange} />
:<Register loadUser={this.loadUser} onRouteChange={this.onRouteChange} />
)
}
</div>
);
}
}
export default App;
SIGNIN.JS
import React from 'react';
class Signin extends React.Component {
constructor(props) {
super(props);
this.state = {
signInEmail: '',
signInPassword: ''
}
}
onEmailChange = (event) => {
this.setState({signInEmail: event.target.value})
}
onPasswordChange = (event) => {
this.setState({signInPassword: event.target.value})
}
onSubmitSignIn = () => {
fetch('https://ancient-sea-46547.herokuapp.com/signin', {
method: 'post',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({
email: this.state.signInEmail,
password: this.state.signInPassword
})
})
.then(response => response.json())
.then(user => {
if (user.id) {
this.props.loadUser(user);
this.props.onRouteChange('home');
}
})
}
render() {
const { onRouteChange} = this.props;
return (
<article className="br3 ba b--black-10 mv4 w-100 w-50-m w-25-l mw6 shadow-5 center">
<main className="pa4 black-80">
<div className="measure">
<fieldset id="sign_up" className="ba b--transparent ph0 mh0">
<legend className="f1 fw6 ph0 mh0">Sign In</legend>
<div className="mt3">
<label className="db fw6 lh-copy f6" for="email-address">Email</label>
<input
className="pa2 input-reset ba bg-transparent hover-bg-black hover-white w-100"
type="email"
name="email-address"
id="email-address"
onChange={this.onEmailChange}
/>
</div>
<div className="mv3">
<label className="db fw6 lh-copy f6" for="password">Password</label>
<input
className="b pa2 input-reset ba bg-transparent hover-bg-black hover-white w-100"
type="password"
name="password"
id="password"
onChange={this.onPasswordChange}
/>
</div>
</fieldset>
<div className="">
<input
onClick={this.onSubmitSignIn}
className="b ph3 pv2 input-reset ba b--black bg-transparent grow pointer f6 dib"
type="submit"
value="Sign in" />
</div>
<div className="lh-copy mt3">
<p onClick={() => onRouteChange('register')} className="f6 link dim black db pointer">Register</p>
</div>
</div>
</main>
</article>
);
}
}
export default Signin;
here is my server.js
const express = require('express');
const bodyParser = require('body-parser');
const bcrypt = require('bcrypt-nodejs');
const cors = require('cors');
const knex = require('knex');
const register = require('./controllers/register');
const signin = require('./controllers/signin');
const profile = require('./controllers/profile');
const image = require('./controllers/image');
process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = '1';
const db = knex({
client: 'pg',
connection: {
connectionString : process.env.DATABASE_URL,
ssl: {
rejectUnauthorized: false
}
}
});
const app = express();
app.use(bodyParser.json())
app.use(cors())
app.get('/', (req, res) => {res.send('it is working') })
app.post('/signin', (req, res) => {signin.handleSignin(req, res, db, bcrypt)})
app.post('/register', (req, res) => {register.handleRegister(req, res, db, bcrypt)})
app.get('/profile/:id', (req, res) => {profile.handleProfile(req, res, db)})
app.put('/image', (req, res) => {image.handleImage(req, res, db)})
app.post('/imageurl', (req, res) => {image.handleApiCall(req, res)})
app.listen(process.env.PORT || 3001, () => {
console.log(`app is running on port ${process.env.PORT}`)
})
register.js
import React from 'react';
class Register extends React.Component {
constructor(props) {
super(props);
this.state = {
email: '',
password: '',
name: ''
}
}
onNameChange = (event) => {
this.setState({name: event.target.value})
}
onEmailChange = (event) => {
this.setState({email: event.target.value})
}
onPasswordChange = (event) => {
this.setState({password: event.target.value})
}
onSubmitSignIn = () => {
fetch('https://ancient-sea-46547.herokuapp.com/register', {
method: 'post',
headers: {'Content-Type': 'application/json'},
body: JSON.stringify({
email: this.state.email,
password: this.state.password,
name: this.state.name
})
})
.then(response => response.json())
.then(user => {
if (user.id) {
this.props.loadUser(user)
this.props.onRouteChange('home');
}
})
}
render() {
return (
<article className="br3 ba b--black-10 mv4 w-100 w-50-m w-25-l mw6 shadow-5 center">
<main className="pa4 black-80">
<div className="measure">
<fieldset id="sign_up" className="ba b--transparent ph0 mh0">
<legend className="f1 fw6 ph0 mh0">Register</legend>
<div className="mt3">
<label className="db fw6 lh-copy f6" for="name">Name</label>
<input
className="pa2 input-reset ba bg-transparent hover-bg-black hover-white w-100"
type="text"
name="name"
id="name"
onChange={this.onNameChange}
/>
</div>
<div className="mt3">
<label className="db fw6 lh-copy f6" for="email-address">Email</label>
<input
className="pa2 input-reset ba bg-transparent hover-bg-black hover-white w-100"
type="email"
name="email-address"
id="email-address"
onChange={this.onEmailChange}
/>
</div>
<div className="mv3">
<label className="db fw6 lh-copy f6" for="password">Password</label>
<input
className="b pa2 input-reset ba bg-transparent hover-bg-black hover-white w-100"
type="password"
name="password"
id="password"
onChange={this.onPasswordChange}
/>
</div>
</fieldset>
<div className="">
<input
onClick={this.onSubmitSignIn}
className="b ph3 pv2 input-reset ba b--black bg-transparent grow pointer f6 dib"
type="submit"
value="Register" />
</div>
<div className="lh-copy mt3">
</div>
</div>
</main>
</article>