{"record":{"id":"6e2dba12a10f01c3","repo":"keras-team/keras","slug":"a-dot-layer-should-be-called-on-a-list-of-2-inpu","errorCode":null,"errorMessage":"A `Dot` layer should be called on a list of 2 inputs. Received: input_shape={input_shape}","messagePattern":"A `Dot` layer should be called on a list of 2 inputs\\. Received: input_shape=(.+?)","errorType":"validation","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"keras/src/layers/merging/dot.py","lineNumber":271,"sourceCode":"                    f\"two elements. Received: axes={axes}\"\n                )\n            if not isinstance(axes[0], int) or not isinstance(axes[1], int):\n                raise ValueError(\n                    f\"Invalid format for argument `axes`: list elements should \"\n                    f\"be integers. Received: axes={axes}\"\n                )\n        self.axes = axes\n        self.normalize = normalize\n        self.supports_masking = True\n        self._reshape_required = False\n\n    def build(self, input_shape):\n        # Used purely for shape validation.\n        if (\n            not isinstance(input_shape[0], (tuple, list))\n            or len(input_shape) != 2\n        ):\n            raise ValueError(\n                f\"A `Dot` layer should be called on a list of 2 inputs. \"\n                f\"Received: input_shape={input_shape}\"\n            )\n        shape1 = input_shape[0]\n        shape2 = input_shape[1]\n        if shape1 is None or shape2 is None:\n            return\n        if isinstance(self.axes, int):\n            if self.axes < 0:\n                axes = [self.axes % len(shape1), self.axes % len(shape2)]\n            else:\n                axes = [self.axes] * 2\n        else:\n            axes = self.axes\n        if shape1[axes[0]] != shape2[axes[1]]:\n            raise ValueError(\n                f\"Incompatible input shapes: \"\n                f\"axis values {shape1[axes[0]]} (at axis {axes[0]}) != \"","sourceCodeStart":253,"sourceCodeEnd":289,"githubUrl":"https://github.com/keras-team/keras/blob/7a34a03db60bf60042242d6a556fc3be119046a5/keras/src/layers/merging/dot.py#L253-L289","documentation":"Error \"A `Dot` layer should be called on a list of 2 inputs. Received: input_shape={input_shape}\" thrown in keras-team/keras.","triggerScenarios":"Thrown at keras/src/layers/merging/dot.py:271 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"7a34a03db60bf60042242d6a556fc3be119046a5","analyzedAt":"2026-08-25T21:25:25.994Z","schemaVersion":2},"datasetVersion":"2026-08-26T02:17:13.382Z"}