Tasks stuck in queued state

[NXDnixiaodong]

Why are most tasks queued？And even if some running tasks are displayed in the queued state in the k8s cluster

airflow 2.5.1
k8s 1.18.0
executor: KubernetesExecutor 

dag = DAG(
    dag_id,
    max_active_tasks=100,
    max_active_runs=100,
    default_args=default_args,
    description='A DAG to read a matrix from a CSV file and perform matrix multiplication',
    schedule_interval=None,
    start_date=days_ago(2),
    catchup=False,
)