Hello, I am trying to make a default run config by super classing the ECSRun class (e.g.

class FargateECSRun(ECSRun)

) and filling in the parameters like

run_task_kwargs

with defaults so that they don't need need to be duplicated in every flow. However, when I go to register the flow, I get an error

ValueError: Flow could not be deserialized successfully. Error was: TypeError('not all arguments converted during string formatting')

- is what I am trying to do not allowed? I'm not sure how to debug this because when I try to these directions,

built_storage

is just an empty dictionary.

Hey @Kathryn Klarich, that is right we don’t support custom RunConfigs. There is a check that sees if the name of the class is in the list we provide. I think you can just create a function that returns the configured

ECSRun

.

ok thanks