< Marvin> what seems to be the issue with my flow ```Unexpec Prefect Community #ask-marvin

Unexpected exception encountered when trying to load flow
Traceback (most recent call last):
  File "/home/data-collection/detectron/.venv/lib/python3.10/site-packages/prefect/engine.py", line 51, in <module>
    flow: "Flow[..., Any]" = load_flow(flow_run)
  File "/home/data-collection/detectron/.venv/lib/python3.10/site-packages/prefect/flow_engine.py", line 130, in load_flow
    flow = run_coro_as_sync(
  File "/home/data-collection/detectron/.venv/lib/python3.10/site-packages/prefect/utilities/asyncutils.py", line 209, in run_coro_as_sync
    return call.result()
  File "/home/data-collection/detectron/.venv/lib/python3.10/site-packages/prefect/_internal/concurrency/calls.py", line 330, in result
    return self.future.result(timeout=timeout)
...
    return await func(client, *args, **kwargs)
  File "/home/data-collection/detectron/.venv/lib/python3.10/site-packages/prefect/flows.py", line 2315, in load_flow_from_flow_run
    await storage_block.get_directory(from_path=from_path, local_path=".")
  File "/home/data-collection/detectron/.venv/lib/python3.10/site-packages/prefect/utilities/asyncutils.py", line 343, in ctx_call
    result = await async_fn(*args, **kwargs)
  File "/home/data-collection/detectron/.venv/lib/python3.10/site-packages/prefect/filesystems.py", line 146, in get_directory
    local_path = Path(local_path).resolve()
  File "/usr/lib/python3.10/pathlib.py", line 1077, in resolve
    s = self._accessor.realpath(self, strict=strict)
  File "/usr/lib/python3.10/posixpath.py", line 397, in realpath
    return abspath(path)
  File "/usr/lib/python3.10/posixpath.py", line 384, in abspath
    cwd = os.getcwd()
FileNotFoundError: [Errno 2] No such file or directory

Marvin

02/17/2025, 8:59 AM

Your message was too long by 203 tokens...

Marvin

02/17/2025, 9:00 AM

The error you're encountering,

FileNotFoundError: [Errno 2] No such file or directory

, typically occurs when the working directory is missing or has been deleted during the execution of your flow. This is likely related to the

get_directory

method in the Prefect filesystem storage block, which tries to resolve a local path that no longer exists. Here are some things you can check or try: 1. Ensure the Working Directory Exists: Verify that the directory from which you're running the Prefect flow exists and hasn't been deleted or moved. This includes any relative paths that might be used by the flow. 2. Check Storage Block Configuration: If you are using a storage block, ensure it is correctly configured to point to a valid directory. You might want to explicitly set the

basepath

in your filesystem block configuration to a directory you know exists. 3. Debugging Path Resolution: The error originates from resolving the path using Python's

pathlib

. You might want to add some debugging to ensure that the paths being resolved are correct. 4. Review Recent Changes: If you recently upgraded to Prefect 3.x, note that there are some changes in how agents and workers operate, as well as how storage is managed. Ensure that your flow is compatible with these changes. Prefect 3.x Gotchas For more detailed information, you can refer to the Prefect Filesystems Code and Flow Engine Code where these functionalities are defined. If you're using a specific storage block, make sure it's correctly implemented according to these guidelines. If these suggestions don't resolve your issue, consider checking for any additional context or logs that might provide more insights into what might be going wrong.

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