keras-team/keras · error · ValueError

x2 must be provided if x1 is specified.

Error message

x2 must be provided if x1 is specified.

What it means

Error "x2 must be provided if x1 is specified." thrown in keras-team/keras.

Source

Thrown at keras/src/backend/openvino/numpy.py:4848

def vectorize(pyfunc, *, excluded=None, signature=None):
    def wrapper(*args, **kwargs):
        converted_args = tuple(convert_to_tensor(arg) for arg in args)
        return pyfunc(*converted_args, **kwargs)

    return wrapper


def where(condition, x1=None, x2=None):
    condition = get_ov_output(condition)
    if condition.get_element_type() != Type.boolean:
        condition = ov_opset.convert(condition, Type.boolean).output(0)
    if x1 is None and x2 is None:
        nonzero_indices = ov_opset.non_zero(condition)
        return OpenVINOKerasTensor(nonzero_indices.output(0))
    if x1 is None:
        return OpenVINOKerasTensor(condition)
    if x2 is None:
        raise ValueError("x2 must be provided if x1 is specified.")

    def cast_literal_like_tensor(literal, x):
        ov_type = get_ov_output(x).get_element_type()
        is_bool = ov_type == Type.boolean
        is_float_to_int = isinstance(literal, float) and ov_type.is_integral()
        if is_bool or is_float_to_int:
            return get_ov_output(literal), get_ov_output(x)
        return get_ov_output(literal, ov_type), get_ov_output(x)

    if isinstance(x1, (int, float)):
        x1, x2 = cast_literal_like_tensor(x1, x2)
    elif isinstance(x2, (int, float)):
        x2, x1 = cast_literal_like_tensor(x2, x1)
    else:
        x1 = get_ov_output(x1)
        x2 = get_ov_output(x2)
    x1, x2 = _align_operand_types(x1, x2, "select()")
    return OpenVINOKerasTensor(ov_opset.select(condition, x1, x2).output(0))

View on GitHub (pinned to 7a34a03db6)

When it happens

Trigger: Thrown at keras/src/backend/openvino/numpy.py:4848 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of keras-team/keras@7a34a03db6 (2026-08-25). Data as JSON: /api/errors/63a6063d68005fb6. Report an issue: GitHub.