ragflow-server  |    File "/ragflow/rag/utils/es_conn.py", line 24, in __init__

ragflow-server  |     raise Exception("Can't connect to ES cluster")

ragflow-server  | Exception: Can't connect to ES cluster

ragflow-server  | Traceback (most recent call last):

ragflow-server  |   File "/ragflow/rag/svr/task_executor.py", line 27, in <module>

ragflow-server  |     from rag.utils import MINIO

ragflow-server  |   File "/ragflow/rag/utils/__init__.py", line 19, in <module>

ragflow-server  |     from .es_conn import ELASTICSEARCH

ragflow-server  |   File "/ragflow/rag/utils/es_conn.py", line 457, in <module>

ragflow-server  |     ELASTICSEARCH = HuEs()

ragflow-server  |                     ^^^^^^

ragflow-server  |   File "/ragflow/rag/utils/__init__.py", line 12, in _singleton

ragflow-server  |     instances[key] = cls(*args, **kw)

ragflow-server  |                      ^^^^^^^^^^^^^^^^

ragflow-server  |    File "/ragflow/rag/utils/es_conn.py", line 24, in __init__

ragflow-server  |     raise Exception("Can't connect to ES cluster")

ragflow-server  | Exception: Can't connect to ES cluster

ragflow-server  | Traceback (most recent call last):

ragflow-server  |   File "/ragflow/rag/svr/task_broker.py", line 21, in <module>

ragflow-server  |     from api.db.db_models import Task

ragflow-server  |   File "/ragflow/api/db/db_models.py", line 33, in <module>

ragflow-server  |     from api.settings import DATABASE, stat_logger, SECRET_KEY

ragflow-server  |   File "/ragflow/api/settings.py", line 35, in <module>

ragflow-server  |     from rag.utils import ELASTICSEARCH

ragflow-server  |   File "/ragflow/rag/utils/__init__.py", line 19, in <module>

ragflow-server  |     from .es_conn import ELASTICSEARCH

ragflow-server  |   File "/ragflow/rag/utils/es_conn.py", line 457, in <module>

ragflow-server  |     ELASTICSEARCH = HuEs()

ragflow-server  |                     ^^^^^^