im trying to handle login with JWT auth and axios in my reactjs app; but everytime i send my data into the backend i get "'data' is not defined no-undef" error...

this is my handle submit code in Login.js:

class Login extends Component{
constructor(props) {
    super(props);
    this.state = {username: "", password: ""};

    this.handleChange = this.handleChange.bind(this);
    this.handleSubmit = this.handleSubmit.bind(this);
}

handleChange(event) {
    this.setState({[event.target.name]: event.target.value});
}

handleSubmit(event) {
    event.preventDefault();
    try {
        const response = axiosInstance.post('/token/obtain/', {
            username: this.state.username,
            password: this.state.password
        });
        axiosInstance.defaults.headers['Authorization'] = "Bearer " + response.data.access;
        localStorage.setItem('access_token', response.data.access);
        localStorage.setItem('refresh_token', response.data.refresh);
        return data;
    } catch (error) {
        throw error;
    }
}

render() {
    return (...

and this in my axiosInstance file :

const axiosInstance = axios.create({
baseURL: 'http://127.0.0.1:8000/',
timeout: 5000,
headers: {
    'Authorization': "Bearer " + localStorage.getItem('access_token'),
    'Content-Type': 'application/json',
    'accept': 'application/json'
}
});

how can in handle this error "'data' is not defined no-undef" ????