Airflow Apache气流属性错误：'；非类型'；对象没有属性'；创建_dagrun'；

我正在尝试在本地airflow环境中运行一个DAG，该环境连接到我的Google Cloud Platform帐户，因此我能够创建新的GCP虚拟机实例，并将它们配置为按计划的时间间隔处理临时区域中的文件。作为其中的一部分，我必须使用从标准气流操作符继承属性的自定义操作符。当我导入我的第一个自定义操作符并运行我的DAG时，它会正常运行，但是，如果我尝试导入更多自定义操作符，则我的DAG会失败，并给出下图和错误消息

如果有人能帮我找出这里可能出现的问题，并与我分享任何有用的提示或检查，我将不胜感激

                          ____/ (  (    )   )  \___
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                  (  (   (  (   ) (  _  ( _) ).  ) . ) ) ( )
                  ( (  (   ) (  )   (  ))     ) _)(   )  )  )
                 ( (  ( \ ) (    (_  ( ) ( )  )   ) )  )) ( )
                  (  (   (  (   (_ ( ) ( _    )  ) (  )  )   )
                 ( (  ( (  (  )     (_  )  ) )  _)   ) _( ( )
                  ((  (   )(    (     _    )   _) _(_ (  (_ )
                   (_((__(_(__(( ( ( |  ) ) ) )_))__))_)___)
                   ((__)        \\||lll|l||///          \_))
                            (   /(/ (  )  ) )\   )
                          (    ( ( ( | | ) ) )\   )
                           (   /(| / ( )) ) ) )) )
                         (     ( ((((_(|)_)))))     )
                          (      ||\(|(|)|/||     )
                        (        |(||(||)||||        )
                          (     //|/l|||)|\\ \     )
                        (/ / //  /|//||||\\  \ \  \ _)
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Node: 0a1e098aa71f
-------------------------------------------------------------------------------
Traceback (most recent call last):
  File "/opt/python3.6/lib/python3.6/site-packages/flask/app.py", line 2317, in wsgi_app
    response = self.full_dispatch_request()
  File "/opt/python3.6/lib/python3.6/site-packages/flask/app.py", line 1840, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/opt/python3.6/lib/python3.6/site-packages/flask/app.py", line 1743, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/opt/python3.6/lib/python3.6/site-packages/flask/_compat.py", line 36, in reraise
    raise value
  File "/opt/python3.6/lib/python3.6/site-packages/flask/app.py", line 1838, in full_dispatch_request
    rv = self.dispatch_request()
  File "/opt/python3.6/lib/python3.6/site-packages/flask/app.py", line 1824, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/opt/python3.6/lib/python3.6/site-packages/flask_admin/base.py", line 69, in inner
    return self._run_view(f, *args, **kwargs)
  File "/opt/python3.6/lib/python3.6/site-packages/flask_admin/base.py", line 368, in _run_view
    return fn(self, *args, **kwargs)
  File "/opt/python3.6/lib/python3.6/site-packages/flask_login/utils.py", line 258, in decorated_view
    return func(*args, **kwargs)
  File "/usr/local/lib/airflow/airflow/www/utils.py", line 276, in wrapper
    return f(*args, **kwargs)
  File "/usr/local/lib/airflow/airflow/www/utils.py", line 323, in wrapper
    return f(*args, **kwargs)
  File "/usr/local/lib/airflow/airflow/utils/db.py", line 73, in wrapper
    return func(*args, **kwargs)
  File "/usr/local/lib/airflow/airflow/www/views.py", line 1180, in trigger
    store_serialized_dags=STORE_SERIALIZED_DAGS
  File "/usr/local/lib/airflow/airflow/utils/db.py", line 73, in wrapper
    return func(*args, **kwargs)
  File "/usr/local/lib/airflow/airflow/models/__init__.py", line 3005, in create_dagrun
    return self.get_dag(store_serialized_dags=store_serialized_dags).create_dagrun(
AttributeError: 'NoneType' object has no attribute 'create_dagrun'

---

转到

气流\u项目/logs/scheduler

并检查最后的日志

该屏幕截图上未显示错误消息。还建议发布代码的屏幕截图。复制粘贴到问题中。我在提供的图像中看不到错误。你能分享错误文本吗？