renanleme edited a comment on issue #13542:
URL: https://github.com/apache/airflow/issues/13542#issuecomment-803572439
I had the same problem today and I think I found the problem.
I'm testing with:
Apache Airflow version: `2.0.1`
Executor: `Celery`
Running locally
I was testing one dag and after changing a few parameters in one of the
tasks in the dag file and cleaning the tasks, the task got stuck on scheduled
state.
**The problem:** The changes that I made broke the task, something like this:
```
airflow-worker_1 | airflow.exceptions.AirflowException: Invalid
arguments were passed to GoogleCloudStorageToBigQueryOperator (task_id:
load_dag). Invalid arguments were:
airflow-worker_1 | **kwargs: {'gcp_conn_id': 'bigquery_default'}
```
So, the worker was refusing to execute because I was passing an invalid
argument to the task. **_The problem is that the worker doesn't notify the
scheduler/web that the file is wrong_** (no alert of a broken dag was being
show in the Airflow home page).
After updating the task parameter and cleaning the task, it ran successfully.
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