Hi, I created an

observable_source_asset

, but if I click Observe sources (either with selecting my new asset or not) I get this not very helpful error in Dagit. What’s

__ASSET___JOB

?

Hrm

__ASSET _JOB_

is an underlying job that houses all the assets in your deployment - but the user should never need to interact with it. paging @sean who i believe has worked more directly with this feature

This is saying that there is missing config for the asset selection-- seems like a possible bug. Is it possible for you to share some code (like the definition of your observable source asset)?

I was trying it with a pretty simple one (obscured a few details as xxx, but otherwise this is it):

@observable_source_asset(
    name="company",
    key_prefix=["xxx"],
    description="Main Company table",
    io_manager_key="pandas_io_manager",
)
def company(context: OpExecutionContext):
    engine: Engine = context.resources.db
    with engine.connect() as con:
        last_update: Result = con.execute("select max(updated) from xxx.company;")

    return LogicalVersion(str(last_update.scalar()))

but it happens with a bare-bone asset, too, like this:

@observable_source_asset
def company(_):
    return LogicalVersion("a")

Hi Andras, I apologize for letting this thread slip off my radar-- are you still having this issue?

No worries, thanks for picking the thread up! Actually yes, I still have this issue, but couldn't get closer to the root cause. Where do you think I should look?

I’m wondering about that

pandas_io_manager

-- does it have required config?

@sean I’m on 1.1.13 currently, will upgrade to 1.1.15 today. That

pandas_io_manager

takes config indeed. But even if I change it to the simplest possible version without any parameters and no logic inside the function I still get the error. So I guess it might be clashing with something else in my setup (perhaps with the asset reconciliation sensor?).