Calling langgraph up i get the error langgraph-api-1 | FileNotFoundError: [Errno 2] No such file or directory: '/deps/langgraph-example-pyproject/my_agent\\agent.py

[Andrei-Tocut]

Checked other resources

• I added a very descriptive title to this issue.
• I searched the LangGraph/LangChain documentation with the integrated search.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangGraph/LangChain rather than my code.
• I am sure this is better as an issue rather than a GitHub discussion, since this is a LangGraph bug and not a design question.

Example Code

langgraph up

Error Message and Stack Trace (if applicable)

langgraph-api-1       | 2024-10-09T06:31:32.686169Z [error    ] Traceback (most recent call last):
langgraph-api-1       |   File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 693, in lifespan
langgraph-api-1       |     async with self.lifespan_context(app) as maybe_state:
langgraph-api-1       |   File "/usr/local/lib/python3.11/contextlib.py", line 210, in __aenter__
langgraph-api-1       |     return await anext(self.gen)
langgraph-api-1       |            ^^^^^^^^^^^^^^^^^^^^^
langgraph-api-1       |   File "/api/langgraph_api/lifespan.py", line 23, in lifespan
langgraph-api-1       |   File "/api/langgraph_api/shared/graph.py", line 205, in collect_graphs_from_env
langgraph-api-1       |   File "/usr/local/lib/python3.11/site-packages/langchain_core/runnables/config.py", line 590, in run_in_executor
langgraph-api-1       |     return await asyncio.get_running_loop().run_in_executor(
langgraph-api-1       |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
langgraph-api-1       |   File "/usr/local/lib/python3.11/concurrent/futures/thread.py", line 58, in run
langgraph-api-1       |     result = self.fn(*self.args, **self.kwargs)
langgraph-api-1       |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
langgraph-api-1       |   File "/usr/local/lib/python3.11/site-packages/langchain_core/runnables/config.py", line 581, in wrapper
langgraph-api-1       |     return func(*args, **kwargs)
langgraph-api-1       |            ^^^^^^^^^^^^^^^^^^^^^
langgraph-api-1       |   File "/api/langgraph_api/shared/graph.py", line 233, in _graph_from_spec
langgraph-api-1       |   File "<frozen importlib._bootstrap_external>", line 936, in exec_module
langgraph-api-1       |   File "<frozen importlib._bootstrap_external>", line 1073, in get_code
langgraph-api-1       |   File "<frozen importlib._bootstrap_external>", line 1130, in get_data
langgraph-api-1       | FileNotFoundError: [Errno 2] No such file or directory: '/deps/langgraph-example-pyproject/my_agent\\agent.py'
langgraph-api-1       |  [uvicorn.error] api_revision=e09c235 api_variant=licensed
langgraph-api-1       | 2024-10-09T06:31:32.686561Z [error    ] Application startup failed. Exiting. [uvicorn.error] api_revision=e09c235 api_variant=licensed
langgraph-api-1 exited with code 3

Description

I want to test the langgraph locally fist before deploy and when i run langgraph up i get the following error langgraph-api-1 | FileNotFoundError: [Errno 2] No such file or directory: '/deps/langgraph-example-pyproject/my_agent\\agent.py. While i encountered this issue i cloned the example project from this and attepmpted to serve it up but i got the same issue. Might it be because i am using windows? But it shouldnt matter since it runs in a docker container.

System Info

langgraph.json

`
{
"dependencies": ["."],
"graphs": {
"agent": "./my_agent/agent.py:graph"
},
"env": ".env"
}

`

pyproject.toml

`
[tool.poetry]
name = "my_agent"
version = "0.1.0"
description = "Example LangGraph project for deployment to LangGraph Cloud"
authors = [
"langchain-ai"
]
packages = [
{ include = "my_agent" },
]

[tool.poetry.dependencies]
python = ">=3.9.0,<3.13"
langgraph = "^0.2.0"
langchain_anthropic = "^0.1.0"
langchain_core = "^0.2.0"
langchain_openai = "^0.1.0"
tavily-python = "^0.3.0"
langchain_community = "^0.2.0"

[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"
`

OS Name Microsoft Windows 10 Enterprise
Version 10.0.19045 Build 19045

❯ langchain --version
langchain-cli 0.0.31

[Andrei-Tocut]

this is the config for the other project

`
[tool.poetry]
name = "quinn_agent"
version = "0.1.0"
description = ""
readme = "README.md"

packages = [
{ include = "quinn_agent" },
]

[tool.poetry.dependencies]
python = ">=3.12,<3.13"
langchain = "^0.3.2"
langchain-openai = "^0.2.2"
langchainhub = "^0.1.21"
langchain-pinecone = "^0.2.0"
python-dotenv = "^1.0.1"
langgraph = "^0.2.34"
neo4j = "^5.25.0"
lark = "^1.2.2"
pydantic = "^2.9.2"

[build-system]
requires = ["poetry-core"]
build-backend = "poetry.core.masonry.api"
`

{ "python_version": "3.12", "dependencies": [ "." ], "graphs": { "agent": "./quinn_agent/agent.py:graph" }, "env": ".env" }
File structure

[vbarda]

@Andrei-Tocut yes, Windows is not currently supported but we're working on adding support

[p4norman]

+1

[githubramu]

+1
I see the error like below...tryies to use npm to install for python instead of pip

[langgraph-api 3/5] RUN cd /deps/langgraph_001 && npm i: