Python Django错误没有这样的表：main.auth\u user\uu old

我正在创建我的第一个Django项目。在将数据添加到产品内的文本字段后，当我按下“保存”按钮时出现错误。这是我得到的错误：

OperationalError at /admin/products/product/add/

no such table: main.auth_user__old

Request Method:     POST
Request URL:    http://127.0.0.1:8080/admin/products/product/add/
Django Version:     2.1
Exception Type:     OperationalError
Exception Value:    

no such table: main.auth_user__old

Exception Location:     C:\Users\Ehtsham\PycharmProjects\firstproject\venv\lib\site-packages\django\db\backends\sqlite3\base.py in execute, line 296
Python Executable:  C:\Users\Ehtsham\PycharmProjects\firstproject\venv\Scripts\python.exe
Python Version:     3.8.1
Python Path:    

['C:\\Users\\Ehtsham\\PycharmProjects\\firstproject',
 'C:\\Users\\Ehtsham\\AppData\\Local\\Programs\\Python\\Python38-32\\python38.zip',
 'C:\\Users\\Ehtsham\\AppData\\Local\\Programs\\Python\\Python38-32\\DLLs',
 'C:\\Users\\Ehtsham\\AppData\\Local\\Programs\\Python\\Python38-32\\lib',
 'C:\\Users\\Ehtsham\\AppData\\Local\\Programs\\Python\\Python38-32',
 'C:\\Users\\Ehtsham\\PycharmProjects\\firstproject\\venv',
 'C:\\Users\\Ehtsham\\PycharmProjects\\firstproject\\venv\\lib\\site-packages',
 'C:\\Users\\Ehtsham\\PycharmProjects\\firstproject\\venv\\lib\\site-packages\\setuptools-40.8.0-py3.8.egg',
 'C:\\Users\\Ehtsham\\PycharmProjects\\firstproject\\venv\\lib\\site-packages\\pip-19.0.3-py3.8.egg']

Server time:    Sun, 5 Jan 2020 15:00:27 +0000

我以前也做过迁移：

(venv) C:\Users\Ehtsham\PycharmProjects\firstproject>python manag
e.py makemigrations
Migrations for 'products':
  products\migrations\0002_offers.py
    - Create model Offers

(venv) C:\Users\Ehtsham\PycharmProjects\firstproject>python manag
e.py migrate
Operations to perform:
  Apply all migrations: admin, auth, contenttypes, products, sess
ions
Running migrations:
  Applying products.0002_offers... OK

---

我正在PyCharm IDE上使用Django版本2.1和SQLite DB浏览器。

它显示您的Django版本是“Django版本”：2.1”

你需要升级你的django。如果这是一个新项目。 请执行以下步骤

步骤：1>

pip安装Django——升级

步骤：2>
python manage.py makemigrations

步骤：3>
python manage.py迁移

Ste:-4>
python manage.py runserver
您进行了迁移并迁移了数据库吗？是的，我进行了迁移。这是否回答了您的问题？将django和pytz升级至最新版本。然后运行migrate。这解决了我的问题。