I'm getting only empty value in the browser Cookies.

import json
from flask import (Flask, render_template, redirect, 
                    url_for, request, make_response)


app = Flask(__name__)

def get_saved_data():
    try:
        data = json.loads(request.cookies.get('character'))
    except TypeError:
        data = {}
    return data

# Define our routes

@app.route('/')
def index():
    data = get_saved_data()
    return render_template('index.html', saves=data)

@app.route('/save', methods=['POST'])
def save():
    response = make_response(redirect(url_for('index')))
    data = get_saved_data()
    data.update(dict(request.form.items()))
    response.set_cookie('character', json.dumps(data))
    return response

app.run(debug=True)