windows - 启动 apache 服务器时，没有检查系统可用于类型 <type 'instancemethod' > 的对象

Question

我按照本教程的步骤操作: https://www.youtube.com/watch?v=SYOUbiGtGiU 之后我运行这个: Airflow 网络服务器-p 8060

它给出了这个堆栈跟踪:

___  ___ |  / _  /   _  __/ _  / / /_/ /_ |/ |/ /
 _/_/  |_/_/  /_/    /_/    /_/  \____/____/|__/
[2020-04-08 19:32:06,906] {__init__.py:51} INFO - Using executor SequentialExecutor
[2020-04-08 19:32:06,907] {dagbag.py:403} INFO - Filling up the DagBag from /home/fatima/airflow/dags
Traceback (most recent call last):
  File "/usr/local/bin/airflow", line 37, in <module>
    args.func(args)
  File "/usr/local/lib/python2.7/dist-packages/airflow/utils/cli.py", line 75, in wrapper
    return f(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/airflow/bin/cli.py", line 900, in webserver
    app = cached_app_rbac(None) if settings.RBAC else cached_app(None)
  File "/usr/local/lib/python2.7/dist-packages/airflow/www/app.py", line 233, in cached_app
    app = create_app(config, testing)
  File "/usr/local/lib/python2.7/dist-packages/airflow/www/app.py", line 103, in create_app
    models.Chart, Session, name="Charts", category="Data Profiling"))
  File "/home/fatima/.local/lib/python2.7/site-packages/flask_admin/contrib/sqla/view.py", line 330, in __init__
    menu_icon_value=menu_icon_value)
  File "/home/fatima/.local/lib/python2.7/site-packages/flask_admin/model/base.py", line 818, in __init__
    self._refresh_cache()
  File "/home/fatima/.local/lib/python2.7/site-packages/flask_admin/model/base.py", line 913, in _refresh_cache
    self._search_supported = self.init_search()
  File "/home/fatima/.local/lib/python2.7/site-packages/flask_admin/contrib/sqla/view.py", line 581, in init_search
    if tools.is_hybrid_property(self.model, name):
  File "/home/fatima/.local/lib/python2.7/site-packages/flask_admin/contrib/sqla/tools.py", line 209, in is_hybrid_property
    return last_name in get_hybrid_properties(last_model)
  File "/home/fatima/.local/lib/python2.7/site-packages/flask_admin/contrib/sqla/tools.py", line 190, in get_hybrid_properties
    for key, prop in inspect(model).all_orm_descriptors.items()
  File "/home/fatima/.local/lib/python2.7/site-packages/sqlalchemy/inspection.py", line 72, in inspect
    "available for object of type %s" % type_
sqlalchemy.exc.NoInspectionAvailable: No inspection system is available for object of type <type 'instancemethod'>

Answer 1

我今天遇到了同样的错误，在这里找到了解决方案(也是从今天开始)Airflow webserver not getting start shows error sqlalchemy.exc.NoInspectionAvailable: No inspection system is available

对于临时解决方案，您需要将 sql alchemy 降级到版本 1.3.15

pip3 uninstall SQLAlchemy
pip3 install SQLAlchemy==1.3.15