joshhoughton opened a new issue, #54360:
URL: https://github.com/apache/airflow/issues/54360
### Apache Airflow version
3.0.4
### If "Other Airflow 2 version" selected, which one?
_No response_
### What happened?
After updating to 3.0.4 (from 3.0.3), I'm getting a `AttributeError: module
'flask.json' has no attribute 'JSONEncoder'` error.
```log
[2025-08-11T12:40:03.040Z] {"asctime": "2025-08-11 12:40:02,388", "name":
"airflow.cli.cli_parser", "levelname": "WARNING", "message": "cannot load CLI
commands from auth manager: module 'flask.json' has no attribute
'JSONEncoder'", "filename": "cli_parser.py", "lineno": 81, "level": "WARNING"}
[2025-08-11T12:40:03.040Z] {"asctime": "2025-08-11 12:40:02,389", "name":
"airflow.cli.cli_parser", "levelname": "WARNING", "message": "Auth manager is
not configured and api-server will not be able to start.", "filename":
"cli_parser.py", "lineno": 82, "level": "WARNING"}
[2025-08-11T12:40:06.325Z] Traceback (most recent call last):
[2025-08-11T12:40:06.325Z] File "/opt/initdb", line 96, in <module>
[2025-08-11T12:40:06.325Z] initdb()
[2025-08-11T12:40:06.325Z] File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/utils/session.py",
line 101, in wrapper
[2025-08-11T12:40:06.325Z] return func(*args, session=session, **kwargs)
[2025-08-11T12:40:06.325Z] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[2025-08-11T12:40:06.325Z] File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/utils/db.py", line
748, in initdb
[2025-08-11T12:40:06.325Z] external_db_manager = RunDBManager()
[2025-08-11T12:40:06.325Z] ^^^^^^^^^^^^^^
[2025-08-11T12:40:06.325Z] File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/utils/db_manager.py",
line 153, in __init__
[2025-08-11T12:40:06.325Z] auth_manager_db_manager =
create_auth_manager().get_db_manager()
[2025-08-11T12:40:06.325Z]
^^^^^^^^^^^^^^^^^^^^^
[2025-08-11T12:40:06.325Z] File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/api_fastapi/app.py",
line 138, in create_auth_manager
[2025-08-11T12:40:06.325Z] auth_manager_cls = get_auth_manager_cls()
[2025-08-11T12:40:06.325Z] ^^^^^^^^^^^^^^^^^^^^^^
[2025-08-11T12:40:06.325Z] File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/api_fastapi/app.py",
line 125, in get_auth_manager_cls
[2025-08-11T12:40:06.325Z] auth_manager_cls =
conf.getimport(section="core", key="auth_manager")
[2025-08-11T12:40:06.325Z]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[2025-08-11T12:40:06.325Z] File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/configuration.py",
line 1239, in getimport
[2025-08-11T12:40:06.325Z] return import_string(full_qualified_path)
[2025-08-11T12:40:06.325Z] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[2025-08-11T12:40:06.325Z] File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/utils/module_loading.py",
line 39, in import_string
[2025-08-11T12:40:06.325Z] module = import_module(module_path)
[2025-08-11T12:40:06.325Z] ^^^^^^^^^^^^^^^^^^^^^^^^^^
[2025-08-11T12:40:06.325Z] File
"/usr/local/lib/python3.12/importlib/__init__.py", line 90, in import_module
[2025-08-11T12:40:06.325Z] return _bootstrap._gcd_import(name[level:],
package, level)
[2025-08-11T12:40:06.325Z]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[2025-08-11T12:40:06.325Z] File "<frozen importlib._bootstrap>", line
1387, in _gcd_import
[2025-08-11T12:40:06.325Z] File "<frozen importlib._bootstrap>", line
1360, in _find_and_load
[2025-08-11T12:40:06.325Z] File "<frozen importlib._bootstrap>", line
1331, in _find_and_load_unlocked
[2025-08-11T12:40:06.325Z] File "<frozen importlib._bootstrap>", line 935,
in _load_unlocked
[2025-08-11T12:40:06.325Z] File "<frozen importlib._bootstrap_external>",
line 999, in exec_module
[2025-08-11T12:40:06.325Z] File "<frozen importlib._bootstrap>", line 488,
in _call_with_frames_removed
[2025-08-11T12:40:06.325Z] File
"/home/airflow/.local/lib/python3.12/site-packages/airflow/providers/fab/auth_manager/fab_auth_manager.py",
line 27, in <module>
[2025-08-11T12:40:06.325Z] from connexion import FlaskApi
[2025-08-11T12:40:06.325Z] File
"/home/airflow/.local/lib/python3.12/site-packages/connexion/__init__.py", line
32, in <module>
[2025-08-11T12:40:06.325Z] from .apps.flask_app import FlaskApp
[2025-08-11T12:40:06.325Z] File
"/home/airflow/.local/lib/python3.12/site-packages/connexion/apps/flask_app.py",
line 153, in <module>
[2025-08-11T12:40:06.325Z] class FlaskJSONEncoder(json.JSONEncoder):
[2025-08-11T12:40:06.325Z] ^^^^^^^^^^^^^^^^
[2025-08-11T12:40:06.325Z] AttributeError: module 'flask.json' has no
attribute 'JSONEncoder'
```
### What you think should happen instead?
_No response_
### How to reproduce
Install via Pipenv with the following dependencies:
```Pipfile
apache-airflow = {extras = ["statsd", "amazon", "github_enterprise",
"async", "cncf.kubernetes", "postgres", "standard", "common-sql", "github"],
version = "==3.0.4"}
```
### Operating System
Debian 12
### Versions of Apache Airflow Providers
```
apache-airflow-providers-amazon==9.10.0
apache-airflow-providers-cncf-kubernetes==10.6.1
apache-airflow-providers-common-compat==1.7.3
apache-airflow-providers-common-io==1.6.2
apache-airflow-providers-common-sql==1.27.5
apache-airflow-providers-fab==2.3.0
apache-airflow-providers-github==2.9.1
apache-airflow-providers-google==15.1.0
apache-airflow-providers-http==5.3.2
apache-airflow-providers-postgres==6.2.1
apache-airflow-providers-smtp==2.2.0
apache-airflow-providers-standard==1.5.0
```
### Deployment
Other 3rd-party Helm chart
### Deployment details
Custom Dockerfiles around the official
`apache/airflow:slim-3.0.4-python3.12` images.
### 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)
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
