OpenBB-finance/OpenBB · error · ValueError

Invalid logging handler

Error message

Invalid logging handler

What it means

Raised in the economic-indicators validator when the transform/unit value (resolved from a user-friendly lowercase name to its code via transform_lookup/unit_lookup) is not among the dataflow's available transform-dimension values for the current country+indicator selection. This is the transform analogue of the country/frequency cross-checks.

Source

Thrown at openbb_platform/core/openbb_core/app/model/system_settings.py:103

        if not user_settings.exists():
            cls.create_json(
                user_settings,
                {"credentials": {}, "preferences": {}, "defaults": {"commands": {}}},
            )

        if not system_settings.exists():
            cls.create_json(system_settings, {})

        return values

    @field_validator("logging_handlers")
    @classmethod
    def validate_logging_handlers(cls, v):
        """Validate the logging handlers."""
        for value in v:
            if value not in ["stdout", "stderr", "noop", "file"]:
                raise ValueError("Invalid logging handler")
        return v

View on GitHub (pinned to 3e071fcc2c)

Solutions

1. Read the `available values` list in the error message and pass one of those exact codes/names.
2. Use `transform='all'` to fetch all transforms and filter client-side.
3. Omit `transform` entirely if you don't need unit selection.
4. For batches, resolve transforms per dataflow rather than reusing one value everywhere.

Example fix

# before
res = obb.economy.economic_indicators(provider='imf', symbol='IFS::NGDP_XDC', country='USA', transform='growth')

# after
res = obb.economy.economic_indicators(provider='imf', symbol='IFS::NGDP_XDC', country='USA', transform='all')

try:
    res = obb.economy.economic_indicators(provider='imf', symbol=sym, country=c, transform=t)
except Exception as e:
    if "dimension 'transform'" in str(e):
        # transform not offered for this selection: fetch all transforms and filter
        res = obb.economy.economic_indicators(provider='imf', symbol=sym, country=c, transform='all')
    else:
        raise

When it happens

Trigger: Passing `transform='growth'` for a dataflow whose UNIT_MEASURE/TRANSFORMATION dimension has no growth entry for that indicator; passing a raw code that isn't in the available values; using a unit name valid in one dataflow (e.g. 'percent_change') in another that uses different codes.

Common situations: Assuming all IFS-style transforms exist across dataflows; hardcoded transform lists copied from one endpoint; IMF codelist differences between dataflows (version drift).

Related errors

• Please install polars: `pip install polars pyarrow` to use
• Chart not found.
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• At least one extension type must be selected.
• Incorrect email or password

AI-assisted analysis of OpenBB-finance/OpenBB@3e071fcc2c (2026-08-14). Data as JSON: /api/errors/e2409fe30d5f16e9. Report an issue: GitHub.