keras-team/keras · error · ValueError

Received an invalid value for argument `groups`, expected a

Error message

Received an invalid value for argument `groups`, expected a positive integer (or `-1` for instance normalization). Received: groups={groups}

What it means

Error "Received an invalid value for argument `groups`, expected a positive integer (or `-1` for instance normalization). Received: groups={groups}" thrown in keras-team/keras.

Source

Thrown at keras/src/layers/normalization/group_normalization.py:83

    """

    def __init__(
        self,
        groups=32,
        axis=-1,
        epsilon=1e-3,
        center=True,
        scale=True,
        beta_initializer="zeros",
        gamma_initializer="ones",
        beta_regularizer=None,
        gamma_regularizer=None,
        beta_constraint=None,
        gamma_constraint=None,
        **kwargs,
    ):
        if not isinstance(groups, int) or (groups <= 0 and groups != -1):
            raise ValueError(
                "Received an invalid value for argument `groups`, expected "
                "a positive integer (or `-1` for instance normalization). "
                f"Received: groups={groups}"
            )
        super().__init__(**kwargs)
        self.supports_masking = True
        self.autocast = False
        self.groups = groups
        self.axis = axis
        self.epsilon = epsilon
        self.center = center
        self.scale = scale
        self.beta_initializer = initializers.get(beta_initializer)
        self.gamma_initializer = initializers.get(gamma_initializer)
        self.beta_regularizer = regularizers.get(beta_regularizer)
        self.gamma_regularizer = regularizers.get(gamma_regularizer)
        self.beta_constraint = constraints.get(beta_constraint)
        self.gamma_constraint = constraints.get(gamma_constraint)

View on GitHub (pinned to 7a34a03db6)

When it happens

Trigger: Thrown at keras/src/layers/normalization/group_normalization.py:83 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/04235d98a490da0b. Report an issue: GitHub.