Kedro-airflow: Expected an instance of `ConfigLoader`, got `NoneType` instead

Following the tutorial https://kedro.readthedocs.io/en/stable/10_deployment/11_airflow_astronomer.html:

I’m trying to run my Kedro Project in Apache Airflow via Astronomer

The kedro package works and the DAG file is also successful imported to Airflow

When I try to trigger the project this error shows up in the logs:

kedro.framework.context.context.KedroContextError: Expected an instance of ConfigLoader, got NoneType instead.

I am using kedro 0.17.1, kedro-airflow 0.4.0

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