I have an issue with File based flow storage. I followed the instructions (https://docs.prefect.io/core/idioms/file-based.html) and could not register the flow with

prefect register -f flows/my_flow.py

. I got an error

Error: no such option: -f

. When I register the flow with

flow.register()

it becomes available in UI but I am unable to run it, the tasks are pending and I can see this error

Failed to load and execute Flow's environment: ModuleNotFoundError("No module named 'github'")

. I am using

0.12.1

and Cloud. Any ideas?

Hi @Klemen Strojan the command is

prefect register flow -f ...

Hi @josh, thanks for the proper command, my bad. I am using a local agent running on my mac, but I also have two existing agents running on Linux machines with older versions of Prefect. I am registering the flow like this:

prefect auth login -t $prefect_user_token
prefect register flow -f flows/my_flow.py --project Dev_project
prefect agent start -t $prefect_runner_token

Should I specify the agent somehow?

Is there a chance the older agents picked up the flow run? That ModuleNotFoundError looks to be that the flow was either picked up by an agent that is running on an older version of prefect or the flow was deployed by an agent in an environment that doesn’t have prefect’s

github

extras installed.

I was missing extras, a clean

pip install "prefect[github]"

changed the error to

Failed to load and execute Flow's environment: UnknownObjectException(404, {'message': 'Not Found', 'documentation_url': '<https://developer.github.com/v3/repos/#get'}>)

pointing me to GitHub API docs. I had to set proper permissions for Access Token (repo), and now it works 🙂 Thanks!

Great!