Exception: Can't connect to ES cluster

[seven0000007]

After deployment through docker-compose, an error is reported and es cannot be connected. Why?

logs:
Traceback (most recent call last):
2025-01-07 17:58:35 File "/ragflow/rag/svr/task_executor.py", line 27, in
2025-01-07 17:58:35 from rag.utils import MINIO
2025-01-07 17:58:35 File "/ragflow/rag/utils/init.py", line 19, in
2025-01-07 17:58:35 from .es_conn import ELASTICSEARCH
2025-01-07 17:58:35 File "/ragflow/rag/utils/es_conn.py", line 457, in
2025-01-07 17:58:35 ELASTICSEARCH = HuEs()
2025-01-07 17:58:35 ^^^^^^
2025-01-07 17:58:35 File "/ragflow/rag/utils/init.py", line 12, in _singleton
2025-01-07 17:58:35 instances[key] = cls(*args, **kw)
2025-01-07 17:58:35 ^^^^^^^^^^^^^^^^
2025-01-07 17:58:35 File "/ragflow/rag/utils/es_conn.py", line 24, in init
2025-01-07 17:58:35 raise Exception("Can't connect to ES cluster")
2025-01-07 17:58:35 Exception: Can't connect to ES cluster

[JinHai-CN]

ES isn't started up. Please check RAGFlow FAQ which metions more on this error.