报错信息如下
You have 13 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
Run ‘python manage.py migrate‘ to apply them.
python manage.py migrate 即可解决
python3.9 manage.py runserver 报错问题解决
原文：https://www.cnblogs.com/wuzhixian/p/15116396.html