OpenBB-finance/OpenBB · warning · EmptyDataError

The request was returned empty.

Error message

The request was returned empty.

What it means

FMP calendar events fetcher queries multiple URLs (e.g. earnings, IPO, dividend calendars) and, if every response is empty, raises EmptyDataError('The request was returned empty.'). The upstream get_data succeeded; each endpoint simply had no rows for the window.

Source

Thrown at openbb_platform/providers/fmp/openbb_fmp/models/calendar_events.py:131

            to_date = date_ranges[i + 1].strftime("%Y-%m-%d")
            urls.append(
                f"{base_url}from={from_date}&to={to_date}&limit=1000&apikey={api_key}"
            )

        async def get_one(url):
            """Get data from one URL."""
            try:
                response = await get_data(url, **kwargs)
            except OpenBBError as e:
                raise e from e

            if response:
                results.extend(response)

        await asyncio.gather(*[get_one(url) for url in urls])

        if not results:
            raise EmptyDataError("The request was returned empty.")

        return sorted(results, key=lambda x: x["date"])

    @staticmethod
    def transform_data(
        query: FmpCalendarEventsQueryParams, data: list, **kwargs: Any
    ) -> list[FmpCalendarEventsData]:
        """Transform the data."""
        return [FmpCalendarEventsData.model_validate(d) for d in data]

View on GitHub (pinned to 3e071fcc2c)

Solutions

1. Widen the start_date/end_date window to include known event dates
2. Confirm start_date <= end_date and both are within FMP's supported range
3. Treat EmptyDataError as a normal empty calendar in scheduled jobs

Example fix

# before
await obb.equity.calendar.events(provider="fmp", start_date="2024-01-06", end_date="2024-01-07")  # weekend

# after
await obb.equity.calendar.events(provider="fmp", start_date="2024-01-01", end_date="2024-01-31")

from datetime import date

assert start_date <= end_date, "start_date must precede end_date"
assert (end_date - start_date).days >= 7, "window very narrow; may contain no events"

from openbb_core.provider.abstract.errors import EmptyDataError

try:
    events = await FmpCalendarEventsFetcher.transform_query(...)
except EmptyDataError:
    events = []  # no events in window; widen dates if unexpected

When it happens

Trigger: Requesting calendar events for a date range with no events (quiet weeks, weekends); start/end dates inverted or outside FMP coverage; a premium event type on a free key returning empty.

Common situations: Nightly jobs over rolling short windows that regularly contain no events; date arguments passed in the wrong order; timezone shifts making 'today' land on an empty day.

Related errors

• No data found for the given query -> {query.model_dump()}
• No data returned for the given symbols.
• No data was returned for the given query.
• Error serializing output for an extension-modified endpoint
• OBBject Extension Error -> An OBBject extension that acts

AI-assisted analysis of OpenBB-finance/OpenBB@3e071fcc2c (2026-08-14). Data as JSON: /api/errors/0ee2432a58d13967. Report an issue: GitHub.