我正在尝试在管理选项卡下添加变量的气流网页用户界面。当我点击variables标签时，它抛出了下面的错误。。

____/ (  (    )   )  \___
                         /( (  (  )   _    ))  )   )\
                       ((     (   )(    )  )   (   )  )
                     ((/  ( _(   )   (   _) ) (  () )  )
                    ( (  ( (_)   ((    (   )  .((_ ) .  )_
                   ( (  )    (      (  )    )   ) . ) (   )
                  (  (   (  (   ) (  _  ( _) ).  ) . ) ) ( )
                  ( (  (   ) (  )   (  ))     ) _)(   )  )  )
                 ( (  ( \ ) (    (_  ( ) ( )  )   ) )  )) ( )
                  (  (   (  (   (_ ( ) ( _    )  ) (  )  )   )
                 ( (  ( (  (  )     (_  )  ) )  _)   ) _( ( )
                  ((  (   )(    (     _    )   _) _(_ (  (_ )
                   (_((__(_(__(( ( ( |  ) ) ) )_))__))_)___)
                   ((__)        \\||lll|l||///          \_))
                            (   /(/ (  )  ) )\   )
                          (    ( ( ( | | ) ) )\   )
                           (   /(| / ( )) ) ) )) )
                         (     ( ((((_(|)_)))))     )
                          (      ||\(|(|)|/||     )
                        (        |(||(||)||||        )
                          (     //|/l|||)|\\ \     )
                        (/ / //  /|//||||\\  \ \  \ _)
-------------------------------------------------------------------------------
Node: servername.domain.com
-------------------------------------------------------------------------------
Traceback (most recent call last):
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask/app.py", line 1988, in wsgi_app
    response = self.full_dispatch_request()
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask/app.py", line 1641, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask/app.py", line 1544, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask/app.py", line 1639, in full_dispatch_request
    rv = self.dispatch_request()
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask/app.py", line 1625, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask_admin/base.py", line 69, in inner
    return self._run_view(f, *args,**kwargs)
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask_admin/base.py", line 368, in _run_view
    return fn(self, *args,**kwargs)
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask_admin/model/base.py", line 1900, in index_view
    return_url=self._get_list_url(view_args),
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask_admin/base.py", line 308, in render
    return render_template(template,**kwargs)
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask/templating.py", line 134, in render_template
    context, ctx.app)
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask/templating.py", line 116, in _render
    rv = template.render(context)
  File "/opt/iig/airflow/lib/python2.7/site-packages/jinja2/environment.py", line 989, in render
    return self.environment.handle_exception(exc_info, True)
  File "/opt/iig/airflow/lib/python2.7/site-packages/jinja2/environment.py", line 754, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/opt/iig/airflow/lib/python2.7/site-packages/airflow/www/templates/airflow/variable_list.html", line 18, in top-level template code
    {% extends 'admin/model/list.html' %}
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask_admin/templates/bootstrap3/admin/model/list.html", line 6, in top-level template code
    {% import 'admin/model/row_actions.html' as row_actions with context %}
  File "/opt/iig/airflow/lib/python2.7/site-packages/airflow/www/templates/admin/master.html", line 18, in top-level template code
    {% extends 'admin/base.html' %}
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask_admin/templates/bootstrap3/admin/base.html", line 30, in top-level template code
    {% block page_body %}
  File "/opt/iig/airflow/lib/python2.7/site-packages/airflow/www/templates/admin/master.html", line 96, in block "page_body"
    {% block body %}
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask_admin/templates/bootstrap3/admin/model/list.html", line 62, in block "body"
    {% block model_list_table %}
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask_admin/templates/bootstrap3/admin/model/list.html", line 110, in block "model_list_table"
    {% block list_row scoped %}
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask_admin/templates/bootstrap3/admin/model/list.html", line 138, in block "list_row"
    {{ get_value(row, c) }}
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask_admin/model/base.py", line 1742, in get_list_value
    self.column_type_formatters,
  File "/opt/iig/airflow/lib/python2.7/site-packages/flask_admin/model/base.py", line 1707, in _get_list_value
    value = column_fmt(self, context, model, name)
  File "/opt/iig/airflow/lib/python2.7/site-packages/airflow/www/views.py", line 2126, in hidden_field_formatter
    return getattr(model, name)
  File "/opt/iig/airflow/lib/python2.7/site-packages/sqlalchemy/orm/attributes.py", line 298, in __get__
    return self.descriptor.__get__(instance, owner)
  File "/opt/iig/airflow/lib/python2.7/site-packages/airflow/models.py", line 3580, in get_val
    return FERNET.decrypt(bytes(self._val, 'utf-8')).decode()
  File "/opt/iig/airflow/lib64/python2.7/site-packages/cryptography/fernet.py", line 75, in decrypt
    return self._decrypt_data(data, timestamp, ttl)
  File "/opt/iig/airflow/lib64/python2.7/site-packages/cryptography/fernet.py", line 110, in _decrypt_data
    raise InvalidToken
InvalidToken

检查后，我没有看到redis pid，但进程正在运行。

ps -ef | grep redis
airflow 12474     1  0 Nov03 ?        00:00:50 /usr/bin/python2 /opt/iig/airflow/bin/flower -b redis://servername:6379/0 --address=0.0.0.0 --port=5555
airflow 16447     1  0 Nov03 ?        00:01:12 /opt/iig/local/redis-stable/bin/redis-server servername:6379

如果你们中有人遇到类似的错误，请提供解决此问题的建议。