keras-team/keras · error · ValueError

Argument `input_tensor` must be a KerasTensor. Received inva

Error message

Argument `input_tensor` must be a KerasTensor. Received invalid type: input_tensor={input_tensor} (of type {type(input_tensor)})

What it means

Error "Argument `input_tensor` must be a KerasTensor. Received invalid type: input_tensor={input_tensor} (of type {type(input_tensor)})" thrown in keras-team/keras.

Source

Thrown at keras/src/layers/core/input_layer.py:36

        batch_shape=None,
        input_tensor=None,
        optional=False,
        name=None,
        **kwargs,
    ):
        super().__init__(name=name)

        if "input_shape" in kwargs:
            warnings.warn(
                "Argument `input_shape` is deprecated. Use `shape` instead."
            )
            shape = kwargs.pop("input_shape")
        if "batch_input_shape" in kwargs:
            batch_shape = kwargs.pop("batch_input_shape")

        if input_tensor is not None:
            if not isinstance(input_tensor, backend.KerasTensor):
                raise ValueError(
                    "Argument `input_tensor` must be a KerasTensor. "
                    f"Received invalid type: input_tensor={input_tensor} "
                    f"(of type {type(input_tensor)})"
                )
            if batch_size is not None:
                if (
                    len(input_tensor.shape) < 1
                    or input_tensor.shape[0] != batch_size
                ):
                    raise ValueError(
                        "When providing the `input_tensor` argument, you "
                        "cannot provide an incompatible `batch_size` argument."
                    )
            if shape is not None:
                if (
                    len(shape) != len(input_tensor.shape) - 1
                    or shape != input_tensor.shape[1:]
                ):

View on GitHub (pinned to 7a34a03db6)

When it happens

Trigger: Thrown at keras/src/layers/core/input_layer.py:36 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/2c0ef9f50977a7cd. Report an issue: GitHub.