manugarri opened a new issue, #28936:
URL: https://github.com/apache/airflow/issues/28936
### Apache Airflow version
Other Airflow 2 version (please specify below)
### What happened
Happening on AWS MWAA 2.4.3
I tried logging to the UI (via AWS SSO) and get the error **Internal Server
Error**.
Checking the scheduler logs on Cloudwatch I see the error is afecting the
webserver:
```
| 2023-01-14T09:52:41.611+00:00 | [2023-01-14 09:52:40 +0000] [632]
[ERROR] Error handling request /aws_mwaa/aws-console-sso?login=true
-- | -- | --
| 2023-01-14T09:52:41.621+00:00 | Traceback (most recent call last):
| 2023-01-14T09:52:41.629+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/flask/app.py", line
2524, in wsgi_app
| 2023-01-14T09:52:41.638+00:00 | ctx.push()
| 2023-01-14T09:52:41.648+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/flask/ctx.py", line
375, in push
| 2023-01-14T09:52:41.659+00:00 | self.session =
session_interface.open_session(self.app, self.request)
| 2023-01-14T09:52:41.670+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/flask_session/sessions.py",
line 535, in open_session
| 2023-01-14T09:52:41.679+00:00 | if saved_session and
saved_session.expiry <= datetime.utcnow():
| 2023-01-14T09:52:41.689+00:00 | TypeError: '<=' not supported between
instances of 'NoneType' and 'datetime.datetime'
| 2023-01-14T09:52:41.699+00:00 |
| 2023-01-14T09:52:41.710+00:00 | During handling of the above exception,
another exception occurred:
| 2023-01-14T09:52:41.722+00:00 |
| 2023-01-14T09:52:41.733+00:00 | Traceback (most recent call last):
| 2023-01-14T09:52:41.742+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/gunicorn/workers/sync.py",
line 136, in handle
| 2023-01-14T09:52:41.754+00:00 | self.handle_request(listener, req,
client, addr)
| 2023-01-14T09:52:41.764+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/gunicorn/workers/sync.py",
line 179, in handle_request
| 2023-01-14T09:52:41.776+00:00 | respiter = self.wsgi(environ,
resp.start_response)
| 2023-01-14T09:52:41.788+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/flask/app.py", line
2548, in __call__
| 2023-01-14T09:52:41.797+00:00 | return self.wsgi_app(environ,
start_response)
| 2023-01-14T09:52:41.808+00:00 | File
"/usr/local/airflow/plugins/aws_mwaa/iam.py", line 30, in __call__
| 2023-01-14T09:52:41.822+00:00 | return self.app(environ, start_response)
| 2023-01-14T09:52:41.834+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/werkzeug/middleware/proxy_fix.py",
line 187, in __call__
| 2023-01-14T09:52:41.844+00:00 | return self.app(environ, start_response)
| 2023-01-14T09:52:41.853+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/flask/app.py", line
2528, in wsgi_app
| 2023-01-14T09:52:41.862+00:00 | response = self.handle_exception(e)
| 2023-01-14T09:52:41.871+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/flask/app.py", line
1724, in handle_exception
| 2023-01-14T09:52:41.881+00:00 | server_error =
self.ensure_sync(handler)(server_error)
| 2023-01-14T09:52:41.892+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/airflow/www/views.py",
line 508, in show_traceback
| 2023-01-14T09:52:41.900+00:00 | render_template(
| 2023-01-14T09:52:41.909+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/flask/templating.py",
line 147, in render_template
| 2023-01-14T09:52:41.919+00:00 | return _render(app, template, context)
| 2023-01-14T09:52:41.930+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/flask/templating.py",
line 128, in _render
| 2023-01-14T09:52:41.939+00:00 | app.update_template_context(context)
| 2023-01-14T09:52:41.950+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/flask/app.py", line
994, in update_template_context
| 2023-01-14T09:52:41.964+00:00 | context.update(func())
| 2023-01-14T09:52:41.977+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/flask_login/utils.py",
line 407, in _user_context_processor
| 2023-01-14T09:52:41.991+00:00 | return dict(current_user=_get_user())
| 2023-01-14T09:52:42.000+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/flask_login/utils.py",
line 372, in _get_user
| 2023-01-14T09:52:42.009+00:00 | current_app.login_manager._load_user()
| 2023-01-14T09:52:42.020+00:00 | File
"/usr/local/airflow/.local/lib/python3.10/site-packages/flask_login/login_manager.py",
line 362, in _load_user
| 2023-01-14T09:52:42.030+00:00 | user_id = session.get("_user_id")
| 2023-01-14T09:52:42.041+00:00 | AttributeError: 'NoneType' object has no
attribute 'get'
```
This issue seems to be tied to [this flask-session active
bug](https://github.com/fengsp/flask-session/issues/67)
### What you think should happen instead
I should be able to login to the Airflow UI
### How to reproduce
I have no idea unfortunately, seems to be an issue when a user logs again
after having a successful login
### Operating System
AWS MWAA
### Versions of Apache Airflow Providers
i think is non applicable.
### Deployment
MWAA
### Deployment details
We had just added a new config variable to the MWAA via [terraform idealo
module](https://registry.terraform.io/modules/idealo/mwaa/aws/latest)
### Anything else
_No response_
### Are you willing to submit PR?
- [ ] Yes I am willing to submit a PR!
### Code of Conduct
- [X] I agree to follow this project's [Code of
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
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