atul-astronomer opened a new issue, #48621:
URL: https://github.com/apache/airflow/issues/48621
### Apache Airflow version
main (development)
### If "Other Airflow 2 version" selected, which one?
_No response_
### What happened?
[2025-04-01, 11:25:53] ERROR - Top level error: source="task"
TypeError: 'NoneType' object is not iterable
File "/opt/airflow/task-sdk/src/airflow/sdk/execution_time/task_runner.py",
line 1056 in main
File "/opt/airflow/task-sdk/src/airflow/sdk/execution_time/task_runner.py",
line 1016 in finalize
File "/opt/airflow/task-sdk/src/airflow/sdk/execution_time/task_runner.py",
line 864 in _run_task_state_change_callbacks
### What you think should happen instead?
_No response_
### How to reproduce
Run the below Dag:
```python
with DAG(
dag_id="expand_kwargs_mod_tf",
doc_md="use expand_kwargs with a mapper function and the taskflow
interface",
schedule=timedelta(days=30 * 365),
start_date=datetime(1970, 1, 1),
tags=["taskmap"]
) as expand_kwargs_mod_tf:
@task
def data():
return [
("hello {}", "foo"),
("goodbye {}", "bar"),
]
def mapper(entry):
print("ENTRY: ", entry)
if entry[1] != "bar":
return {"template": entry[0], "user": entry[1]}
else:
raise AirflowSkipException("no entry for foo")
@task(task_id="one_task")
def printer(template, user):
print(template.format(user))
printer.expand_kwargs(data().map(mapper))
```
### Operating System
Linux
### Versions of Apache Airflow Providers
_No response_
### Deployment
Other
### Deployment details
_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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