Airflow 气流-无法删除dag

我正在尝试按照命令删除DAG，但出现以下错误

命令

 airflow delete_dag example_http_operator

错误：

File "/usr/local/lib64/python2.7/site-packages/sqlalchemy/engine/default.py", line 588, in do_execute
    cursor.execute(statement, parameters)
sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) no such table: dag
[SQL: SELECT dag.dag_id AS dag_dag_id, dag.root_dag_id AS dag_root_dag_id, dag.is_paused AS dag_is_paused, dag.is_subdag AS dag_is_subdag, dag.is_active AS dag_is_active, dag.last_scheduler_run AS dag_last_scheduler_run, dag.last_pickled AS dag_last_pickled, dag.last_expired AS dag_last_expired, dag.scheduler_lock AS dag_scheduler_lock, dag.pickle_id AS dag_pickle_id, dag.fileloc AS dag_fileloc, dag.owners AS dag_owners, dag.description AS dag_description, dag.default_view AS dag_default_view, dag.schedule_interval AS dag_schedule_interval
FROM dag
WHERE dag.dag_id = ?
 LIMIT ? OFFSET ?]

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没有必要重复报价。如果您删除了它，错误仍然存在，请检查您的dag名称。相同错误。Dag存在。这是一个示例DAG。我也试过其他的狗。。无法删除任何您所处的环境？在主机上？在主机上的docker？中。Amazone ec2实例