Langgraph postgress and redis issue

[cmanohar25]

2025-06-23T06:44:17.566880Z [error ] Background worker scheduler failed [langgraph_runtime_postgres.queue] api_revision=35db578 api_variant=licensed langgraph_api_version=0.2.61 thread_name=MainThread
Traceback (most recent call last):
File "/usr/local/lib/python3.11/site-packages/langgraph_runtime_postgres/queue.py", line 236, in queue
File "/usr/local/lib/python3.11/site-packages/langgraph_runtime_postgres/ops.py", line 1522, in next
File "/usr/local/lib/python3.11/site-packages/coredis/commands/_validators.py", line 145, in wrapped
return await func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/coredis/commands/_wrappers.py", line 206, in wrapped
async with command_cache(callable, *args, **kwargs) as response:
File "/usr/local/lib/python3.11/contextlib.py", line 210, in aenter
return await anext(self.gen)
^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/coredis/commands/_wrappers.py", line 103, in call
yield await func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/coredis/commands/core.py", line 3249, in blpop
return await self.execute_command(
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/coredis/client/cluster.py", line 759, in execute_command
return await self.retry_policy.call_with_retries(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/coredis/retry.py", line 55, in call_with_retries
return await func()
^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/coredis/client/cluster.py", line 808, in _execute_command
return await self._execute_command_on_single_node(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/coredis/client/cluster.py", line 890, in _execute_command_on_single_node
r = await self.connection_pool.get_connection_by_node(node)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/coredis/pool/cluster.py", line 404, in get_connection_by_node
connection = self._make_node_connection(node)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/coredis/pool/cluster.py", line 260, in _make_node_connection
connection = self.connection_class(
^^^^^^^^^^^^^^^^^^^^^^
TypeError: Connection.init() got an unexpected keyword argument 'read_from_replicas'

Dependencies
requires-python = ">=3.9"
dependencies = [
"langgraph",
"langgraph-checkpoint-postgres",
"langgraph-checkpoint-redis",
# Optional (for selecting different models)
"langchain-anthropic",
"langchain",
"python-dotenv",
"langgraph-sdk",
"trustcall",
"ibm-watsonx-ai",
"python-dotenv",
"langchain-openai",
"bs4",
"pypdf",
"python_multipart",
"psycopg2",
"pgvector",
"boto3",
"langchain-aws",
"langchain-ibm",
"langchain-openai",
"aioboto3"
]

[project.optional-dependencies]
dev = ["mypy>=1.11.1", "ruff>=0.6.1", "pytest-asyncio"]

[build-system]
requires = ["setuptools>=73.0.0", "wheel"]
build-backend = "setuptools.build_meta"

DockerFile
FROM langchain/langgraph-api:3.13

-- Adding local package . --

ADD . /deps/memory-service

-- End of local package . --

-- Installing all local dependencies --

RUN apt-get update && apt-get install -y libpq-dev gcc
RUN pip install --upgrade pip setuptools wheel

-- Installing all local dependencies --

RUN PYTHONDONTWRITEBYTECODE=1 pip install --no-cache-dir -c /api/constraints.txt -e /deps/*

-- End of local dependencies install --

ENV LANGGRAPH_STORE='{"index": {"dims": 1536, "embed": "openai:text-embedding-3-small"}}'

ENV LANGSERVE_GRAPHS='{"chatbot": "/deps/memory-service/src/chatbot/graph_watsonx_image.py:graph", "memory_graph": "/deps/memory-service/src/memory_graph/graph.py:graph", "agentic_graph": "/deps/memory-service/src/graph_flow_factory/agentic_graph.py:graph", "image_reco_graph": "/deps/memory-service/src/graph_flow_factory/image_reco_graph.py:graph"}'

-- Ensure user deps didn't inadvertently overwrite langgraph-api

RUN mkdir -p /api/langgraph_api /api/langgraph_runtime /api/langgraph_license && touch /api/langgraph_api/init.py /api/langgraph_runtime/init.py /api/langgraph_license/init.py
RUN PYTHONDONTWRITEBYTECODE=1 pip install --no-cache-dir --no-deps -e /api

-- End of ensuring user deps didn't inadvertently overwrite langgraph-api --

WORKDIR /deps/memory-service

Please help me to solve the above error @eric-langchain @langchain-infra

[hinthornw]

Sounds like a coredis dep problem. Are you still running into issues?

https://coredis.readthedocs.io/en/stable/release_notes.html#v4-4-0