When I attempt to create a taco I get a peewee.OperationalError: table taco has no column named timestamp

import datetime

from peewee import *
from flask.ext.bcrypt import generate_password_hash
from flask.ext.login import UserMixin

DATABASE = SqliteDatabase('memory.db')

#Make User
class User(UserMixin,Model):
  email = CharField(unique=True)
  password = CharField(max_length=100) #Give the User an email and a passsword

  class Meta:
    database = DATABASE

  @classmethod  #This makes cls == User class find out the WHY
  def create_user(cls,email,password, admin=False):  
    try:
      with DATABASE.transaction():
        cls.create(
          email = email,
          password=generate_password_hash(password),
          is_admin=admin  #Provide a create User method,that hashes their passwords
        )
    except IntegrityError:
      raise ValueError('User already exists')


class Taco(Model):
  timestamp = DateTimeField(default=datetime.datetime.now)
  user = ForeignKeyField(
      rel_model=User,
      related_name='tacos'
  )
  protein = CharField(max_length=25)
  shell = CharField(max_length=25)
  cheese = BooleanField()
  extras = TextField()

  class Meta:
      database = DATABASE
      order_by = ('-timestamp',)




#Provide a create User method,that hashes their passwords
def initialize():
  DATABASE.connect()
  DATABASE.create_tables([User,Taco],safe=True)
  DATABASE.close()