Another question (I think combining other features with persistent results is breaking some things today): Any idea why I would be getting 'Object of type Parameter is not JSON serializable'?

Hey @John Jacoby, I can look into it. Can you give me some example code?

Sure thing I'm AFK right now but I appreciate the support. I'll copy you a snippet when I get back.

This works for me

import prefect
from prefect import Flow, task, Parameter

@task
def add_one(x):
    x = int(x)
    return x + 1

with Flow("param_Test") as flow:
    x = Parameter("x", default=["1", "2", "3"])
    test = add_one.map(x)

flow.register("bristech")