Why is my code not passing the Tacocat challenge. The grader is less than helpful, only spitting back Bummer! Try again!

from flask import (Flask, g, render_template, flash,
                   redirect, url_for, abort)
from flask.ext.login import (LoginManager,login_user,logout_user,
                             login_required,current_user)
from flask.ext.bcrypt import check_password_hash

import forms
import models


DEBUG=True
HOST='0.0.0.0'
PORT=8000

app=Flask(__name__)
app.secret_key='fartbox99'

login_manager=LoginManager()
login_manager.init_app(app)
login_manager.login_view='login'

@login_manager.user_loader
def load_user(userid):
    try:
        return models.User.get(models.User.id==userid)
    except models.DoesNotExist:
        return None

@app.before_request
def before_request():
    """Connect to the database"""
    g.db=models.DATABASE
    g.db.connect()
    g.user=current_user

@app.after_request
def after_request(response):
    """Close the database"""
    g.db.close()
    return response

@app.route('/register', methods=['GET','POST'])
def register():
    form=forms.RegisterForm()
    if form.validate_on_submit():
        flash("You Successfully registered", "success")
        models.User.create_user(
            email=form.email.data,
            password=form.password.data
        )
        return redirect(url_for('index'))
    return render_template('register.html', form=form)

@app.route('/')
def index():
    try:
        tacos=models.Taco.select()
    except models.DoesNotExist:    
        return render_template('índex.html')
    else:
        return render_template('index.html', tacos=tacos)

@app.route('/login', methods=['GET','POST'])
def login():
    form=forms.LoginForm()
    if form.validate_on_submit:
        try:
            user=models.User.get(models.User.email==form.email.data)
        except models.DoesNotExist:
            flash("Your email or password does not match", 'error')
        else:
            if check_password_hash(user.password, form.password.data):
                login_user(user)
                flash("You've been logged in!", 'success')
                return redirect(url_for('index'))
            else:
                flash("email or password doesn't match!", 'error')
    return render_template('login.html', form=form)

@app.route('/logout')
@login_required
def logout():
    flash("You've been logged out.", 'success')
    return redirect(url_for('index'))

@app.route('/taco', methods=['POST'])
@login_required
def taco():
    form=forms.TacoForm()
    if form.validate_on_submit:
        flash("You Successfully Created Your Taco", "success")
        models.Taco.create_taco(
        protein=form.protein.data,
        shell=form.shell.data,
        cheese=form.cheese.data,
        extras=form.extras.data,
        user=g.user._get_current_object()
        )
        return redirect(url_for('index'))
    return render_template('taco.html', form=form)

if __name__ == '__main__':
    models.initialize()
    try:
        models.User.create_user(
            email="chrisgraz@gmail.com",
            password='reallycomplicatedpassword'
        )
    except ValueError:
        pass
    #app.run(debug=DEBUG, host=HOST, port=PORT)

import datetime

from flask.ext.bcrypt import Bcrypt, generate_password_hash, check_password_hash
from flask.ext.login import UserMixin
from peewee import *


DATABASE=SqliteDatabase('social.db')

class User(UserMixin, Model):
    email=CharField(unique=True)
    password=CharField(max_length=100)

    class meta:
        database=DATABASE

    @classmethod    
    def create_user(cls, email, password):
        try:
            with DATABASE.transaction():
                cls.create(
                email=email,
                password=generate_password_hash(password))
        except IntegrityError:
            raise ValueError('User already exists')

class Taco(Model):
    protein=CharField()
    shell=CharField()
    cheese=BooleanField(default=False)
    extras=CharField()
    user=ForeignKeyField(rel_model=User, related_name='tacos')

    class meta:
        database=DATABASE

    @classmethod
    def create_taco(cls, protein, shell, cheese, extras, user):
        with DATABASE.transaction():#this is something I had in my notes
            cls.create(
                protein=protein,
                shell=shell,
                cheese=cheese,
                extras=extras,
                user=user)

def initialize():
    DATABASE.connect()
    DATABASE.create_tables([User, Taco],safe=True)
    DATABASE.close()

from flask_wtf import Form
from wtforms import StringField, PasswordField, TextField, BooleanField
from wtforms.validators import (DataRequired, Email, Length,
                                EqualTo, Regexp, ValidationError)

from models import User

def email_exists(form, field):
    if User.select().where(User.email==field.data).exists():
        raise ValidationError('User with that email already exists.')

class RegisterForm(Form):
    email=StringField(
        'Émail',
        validators=[
            DataRequired(),
            Email(),
            email_exists
        ])
    password=PasswordField(
        'Password',
        validators=[
            DataRequired(),
            Length(min=8),
            EqualTo('password2',message='Passwords must match!')            
        ])
    password2=PasswordField(
        'Confirm Password',
        validators=[
            DataRequired()
        ])


class LoginForm(Form):
    email=StringField(
        'Émail',
        validators=[
            DataRequired(),
            Email()
        ])
    password=PasswordField(
        'Password',
        validators=[
            DataRequired()            
        ])

class TacoForm(Form):
    protein=StringField('Protein',validators=[DataRequired()])
    shell=StringField('Shell',validators=[DataRequired()])
    cheese=BooleanField('Cheese')
    extras=TextField('Extras')