try:
                value = body_to_process.get(get_validation_alias(field))
            # If the received body is a list, not a dict
            except AttributeError:
                errors.append(get_missing_field_error(loc))
                continue
        v_, errors_ = _validate_value_with_model_field(
            field=field, value=value, values=values, loc=loc
        )

*   `tf.keras.mixed_precision`
    *   When using mixed precision, calling `RMSprop.apply_gradients` or
        `Nadam.apply_gradients` outside a `tf.function` does not work and will
        raise the AttributeError "Tensor.op is meaningless when eager execution
        is enabled". See this
        [issue](https://github.com/tensorflow/tensorflow/issues/45536) for
        details and a workaround.