ajbosco opened a new issue #19519:
URL: https://github.com/apache/airflow/issues/19519
### Apache Airflow version
2.2.1 (latest released)
### Operating System
Debian Buster (docker)
### Versions of Apache Airflow Providers
n/a
### Deployment
Other 3rd-party Helm chart
### Deployment details
_No response_
### What happened
The DAG parses and runs fine on 2.1.3, but when we upgrade to the latest
version it fails to import:
```
Broken DAG: [/usr/local/airflow/dags/test_dag.py] Traceback (most recent
call last):
File "/usr/local/lib/python3.8/json/encoder.py", line 257, in iterencode
return _iterencode(o, 0)
File "/usr/local/lib/python3.8/json/encoder.py", line 179, in default
raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type datetime is not JSON serializable
```
### What you expected to happen
_No response_
### How to reproduce
_No response_
### 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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