Hi, I am having an issue where a downstream flow triggered from an ArgoEvent has an

IncludeFile

flow param that looks like this:

eval_run_config_file: str | None = IncludeFile(  # type: ignore
        name="eval_run_config_file",
        default=None,  # type: ignore
        required=False,
    )

The trigger conditions are as so:

@trigger(
    event={
        "name": "prediction_run_split_created",
        "parameters": ["env", "prediction_run_id", "split"],
    }
)

The sensor pod logs show the event was process successfully and sent these params:

Parameters:
  env:               "dev"
  eval_run_config_file: null
  eval_run_desc:     ""
  prediction_run_id: "4f84e754-063a-4be2-b04c-44edb599cb6d"
  split:             "VALIDATION"

But then the flow fails in

start

step saying:

Error: Invalid value for '--eval_run_config_file': IncludeFile: could not open file 'null' for reading

I want the triggered flow to default

eval_run_config_file

to

None

in this condition, but it’s not working. Any advice? Am I doing something wrong? Is this a bug? Help appreciated! Thank you 🙏🏻

@mysterious-coat-51999 which version of metaflow was used to deploy the flow?

I see

2.12.9

from

pip list

let me triage and get back to you

Thank you very much. If I learn anything more in my debugging I will share here