{"record":{"id":"2db35ab42c18b562","repo":"keras-team/keras","slug":"input-tensor-must-be-a-valid-keras-tensor-type-re","errorCode":null,"errorMessage":"input_tensor must be a valid Keras tensor type; Received {input_tensor} of type {type(input_tensor)}","messagePattern":"input_tensor must be a valid Keras tensor type; Received (.+?) of type (.+?)","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"keras/src/applications/mobilenet_v2.py","lineNumber":172,"sourceCode":"                if input_tensor.shape[2] != input_shape[1]:\n                    raise ValueError(\n                        \"input_tensor.shape[2] must equal input_shape[1]; \"\n                        \"Received `input_tensor.shape=\"\n                        f\"{input_tensor.shape}`, \"\n                        f\"`input_shape={input_shape}`\"\n                    )\n        else:\n            raise ValueError(\n                \"input_tensor is not a Keras tensor; \"\n                f\"Received `input_tensor={input_tensor}`\"\n            )\n\n    # If input_shape is None, infer shape from input_tensor.\n    if input_shape is None and input_tensor is not None:\n        try:\n            backend.is_keras_tensor(input_tensor)\n        except ValueError:\n            raise ValueError(\n                \"input_tensor must be a valid Keras tensor type; \"\n                f\"Received {input_tensor} of type {type(input_tensor)}\"\n            )\n\n        if input_shape is None and not backend.is_keras_tensor(input_tensor):\n            default_size = 224\n        elif input_shape is None and backend.is_keras_tensor(input_tensor):\n            if backend.image_data_format() == \"channels_first\":\n                rows = input_tensor.shape[2]\n                cols = input_tensor.shape[3]\n            else:\n                rows = input_tensor.shape[1]\n                cols = input_tensor.shape[2]\n\n            if rows == cols and rows in [96, 128, 160, 192, 224]:\n                default_size = rows\n            else:\n                default_size = 224","sourceCodeStart":154,"sourceCodeEnd":190,"githubUrl":"https://github.com/keras-team/keras/blob/7a34a03db60bf60042242d6a556fc3be119046a5/keras/src/applications/mobilenet_v2.py#L154-L190","documentation":"Error \"input_tensor must be a valid Keras tensor type; Received {input_tensor} of type {type(input_tensor)}\" thrown in keras-team/keras.","triggerScenarios":"Thrown at keras/src/applications/mobilenet_v2.py:172 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"}