A Task was passed as an argument to PrefectSecret, you likely want to first initialize PrefectSecret with any static (non-Task) arguments, then call the initialized task with any dynamic (Task) arguments instead. For example:

  my_task = PrefectSecret(...)  # static (non-Task) args go here
  res = my_task(...)  # dynamic (Task) args go here

from prefect import Flow, task, Parameter
from prefect.tasks.secrets import PrefectSecret
from prefect.client.secrets import Secret



@task
def say_hello(secret):
    print("hello {}".format(secret))



with Flow("hello_flowx") as flow:
    secret_key = Parameter("secret_key")
    secret = Secret(secret_key)
    say_hellox = say_hello(secret)

flow.run(parameters={"secret_key": "secret_key"})