hi,team:

    my dag is 1 minute schedule,one parts dag state is success,but tasks state is not yet started in a dag:

![image](https://user-images.githubusercontent.com/41068725/116344664-357d8780-a819-11eb-8010-c746ffdfdbcc.png)


   how can to fix it?
airflow/settings.py
"""Gets session timeout configs and handles outdated configs gracefully."""
    session_lifetime_minutes = conf.get('webserver', 'session_lifetime_minutes', fallback=None)
    session_lifetime_days = conf.get('webserver', 'session_lifetime_days', fallback=None)
    uses_deprecated_lifetime_configs = session_lifetime_days or conf.get(
        'webserver', 'force_log_out_after', fallback=None
    )
    minutes_per_day = 24 * 60
    default_lifetime_minutes = '43200'
    if uses_deprecated_lifetime_configs and session_lifetime_minutes == default_lifetime_minutes:
        warnings.warn(
            '`session_lifetime_days` option from `[webserver]` section has been '
            'renamed to `session_lifetime_minutes`. The new option allows to configure '
            'session lifetime in minutes. The `force_log_out_after` option has been removed '
            'from `[webserver]` section. Please update your configuration.',
            category=DeprecationWarning,
        )
        if session_lifetime_days:
            session_lifetime_minutes = minutes_per_day * int(session_lifetime_days)
    if not session_lifetime_minutes:
        session_lifetime_days = 30
        session_lifetime_minutes = minutes_per_day * session_lifetime_days
    logging.debug('User session lifetime is set to %s minutes.', session_lifetime_minutes)
    return int(session_lifetime_minutes)
def import_local_settings():