我正在尝试将 Superset 配置为从我的 Phoenix DB 读取数据。我已经按照说明添加了SQLAlchemy库，但是当我尝试“添加数据库”时，出现以下异常：
The error message returned was:
No module named 'base'
我在 superset.log 中没有看到任何消息，所以我不知道如何进行故障排除。这是 venv 中的 python 模块列表
alembic (0.9.6)
amqp (1.4.9)
anyjson (0.3.3)
Babel (2.5.1)
billiard (3.3.0.23)
celery (3.1.23)
cffi (1.11.2)
click (6.7)
colorama (0.3.9)
cryptography (1.5.3)
defusedxml (0.5.0)
Flask (0.12.2)
Flask-AppBuilder (1.8.1)
Flask-Babel (0.11.2)
Flask-Cache (0.13.1)
Flask-Login (0.2.11)
Flask-Migrate (1.5.1)
Flask-OpenID (1.2.5)
Flask-Script (2.0.5)
Flask-SQLAlchemy (2.0)
Flask-Testing (0.5.0)
Flask-WTF (0.14.2)
future (0.16.0)
gunicorn (19.6.0)
humanize (0.5.1)
idna (2.6)
itsdangerous (0.24)
JayDeBeApi (1.1.1)
Jinja2 (2.10)
JPype1 (0.6.2)
kerberos (1.2.5)
kombu (3.0.37)
Mako (1.0.7)
Markdown (2.6.6)
MarkupSafe (1.0)
numpy (1.14.0rc1)
pandas (0.21.1)
parsedatetime (2.0)
phoenixdb (0.7)
pip (9.0.1)
protobuf (3.5.2)
pyasn1 (0.4.2)
pycparser (2.18)
pydruid (0.3.0)
PyGreSQL (5.0.3)
PyHive (0.5.0)
PyMySQL (0.7.9)
python-dateutil (2.5.3)
python-editor (1.0.3)
python3-openid (3.1.0)
pytz (2017.3)
requests (2.10.0)
sasl (0.2.1)
setuptools (38.5.2)
simplejson (3.8.2)
six (1.11.0)
SQLAlchemy (1.2.5)
sqlalchemy-phoenix (0.3.0)
SQLAlchemy-Utils (0.32.7)
sqlparse (0.1.19)
superset (0.15.0)
thrift (0.10.0)
thrift-sasl (0.3.0)
urllib-kerberos (0.2.0)
Werkzeug (0.11.10)
WTForms (2.1)