After saving the DAG file in the $AIRFLOW_HOME/dags directory, Airflow automatically processes it and displays it on the DAGs page. The DAG may take a few minutes to appear.
To check for DAG import errors, open another terminal, activate the virtual environment, set AIRFLOW_HOME, and run:
source airflow_env/bin/activate
export AIRFLOW_HOME=~/airflow-azure-quickstart
airflow dags list-import-errors
Refresh the Airflow UI after the DAG has been processed.