DAG fails with "can only concatenate str (not 'Variable') to str" error when triggered using astro run command

[kandharvishnu]

Describe the bug

When a DAG is triggered using the astro run <dag_id> command and variable imported from airflow_settings.yaml, it fails with the error:

FAILED ❌ can only concatenate str (not "Variable") to str.

However, the same DAG runs successfully when triggered from the Airflow UI or using the airflow dags trigger <dag_id> command.

What CLI Version did you experience this bug?
1.30.0

This CLI bug is related to which Astronomer Platform?

• [ X ] Astro
• Software
• None/Unknown

What Operating System is the above CLI installed on?

🪜 Steps To Reproduce

• Add a variable in airflow_settings.yaml.
• Use the variable in a DAG task. For example:

from airflow import DAG
from airflow.operators.python import PythonOperator
from datetime import datetime

# Define the Python function to be executed
def read_variable():
    from airflow.models import Variable
    bucket_name = Variable.get("default_s3_bucket")
    print('*' + bucket_name + '*')

# Default arguments for the DAG
default_args = {
    'owner': 'airflow',
    'retries': 1,
}

# Instantiate the DAG
with DAG(
    dag_id='simple_python_operator_dag',
    default_args=default_args,
    start_date=datetime(2024, 1, 1),
    schedule_interval='@daily',  # Runs daily
    catchup=False,
) as dag:

    read_variable = PythonOperator(
        task_id="read_variable",
        python_callable=read_variable
    )

• Trigger the DAG using the astro run <dag_id> command from the local environment.