Airflow XCom problem

demo_xcom_problem.py

import datetime
from airflow.decorators import task, dag

from airflow.providers.amazon.aws.operators.emr import EmrServerlessCreateApplicationOperator
    
@dag(
    dag_id="demo-xcom-problem",
    start_date=datetime.datetime(2021, 1, 1),
    catchup=False
)
def taskflow():
    @task(multiple_outputs=True)
    def config() -> dict:
        return {
            "name": "my-spark-app",
        }
    create_app = EmrServerlessCreateApplicationOperator(
            task_id="create_spark_app",
            job_type="SPARK",
            release_label="emr-6.9.0",
            config=config(),
            aws_conn_id="",
        )
    create_app
taskflow()