Hi everyone. I've been trying to upgrade from using the old Prefect Agents to Workers and Work Pools. I created a Process type work pool to replace my old agent and spun on a worker on my local machine. However, when running a flow from Prefect Cloud, I get the following error upon getting to the pull steps (I use Azure Blob as storage): FYI: Machine running the worker is a Windows machine.

13:38:48.712 | ERROR   | Flow run 'resilient-llama' - Flow could not be retrieved from deployment.

Traceback (most recent call last):

File "C:\python_scripts\Prefect2.0-Flows\venv2\lib\site-packages\prefect\deployments\steps\core.py", line 124, in run_steps

step_output = await run_step(step, upstream_outputs)

File "C:\python_scripts\Prefect2.0-Flows\venv2\lib\site-packages\prefect\deployments\steps\core.py", line 94, in run_step

step_func = _get_function_for_step(fqn, requires=keywords.get("requires"))

File "C:\python_scripts\Prefect2.0-Flows\venv2\lib\site-packages\prefect\deployments\steps\core.py", line 58, in _get_function_for_step

subprocess.check_call(

File "C:\python39\lib\subprocess.py", line 368, in check_call

retcode = call(*popenargs, **kwargs)

File "C:\python39\lib\subprocess.py", line 349, in call

with Popen(*popenargs, **kwargs) as p:

File "C:\python39\lib\subprocess.py", line 951, in __init__

self._execute_child(args, executable, preexec_fn, close_fds,

File "C:\python39\lib\subprocess.py", line 1420, in _execute_child

hp, ht, pid, tid = _winapi.CreateProcess(executable, args,

FileNotFoundError: [WinError 2] The system cannot find the file specified

Hey @Carlos Cueto! It looks like execution fails when your worker attempts to install

prefect-azure

to run your pull step. You can work around this by installing

prefect-azure

on your worker before execution, but it’d be great if you opened an issue so we can fix the underlying issue!

Hi Alex, thanks for the reply. I actually did install

prefect-azure

manually via pip before even starting up the worker.

It looks like your worker doesn’t have permission to write to the folder that it’s trying to write your code to. That folder looks like it is a temporary folder created by Prefect, so you might need to update the local permissions of your worker to be able to access temporary folders.