demo bug

[Ddper]

ImproperlyConfigured at /auth/user/
settings.DATABASES is improperly configured. Please supply the ENGINE value. Check settings documentation for more details.

django-xadmin/demo_app/demo/settings.py

try:
    import dj_database_url
    # DATABASES['default'] = dj_database_url.config(default="sqlite:////" + os.path.join(PROJECT_ROOT, 'data.db'))  # 正确代码
    DATABASES['default'] = dj_database_url.config()  # 错误代码
except Exception:
    pass