{"record":{"id":"b972153ab8b7dabc","repo":"keras-team/keras","slug":"padding-is-invalid-it-should-be-valid-same","errorCode":null,"errorMessage":"Padding is invalid, it should be 'valid', 'same'. Received: padding={padding}","messagePattern":"Padding is invalid, it should be 'valid', 'same'\\. Received: padding=(.+?)","errorType":"validation","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"keras/src/layers/preprocessing/stft_spectrogram.py","lineNumber":184,"sourceCode":"                f\"Received fft_length={fft_length}\"\n            )\n\n        all_modes = [\"log\", \"magnitude\", \"psd\", \"real\", \"imag\", \"angle\", \"stft\"]\n\n        if mode not in all_modes:\n            raise ValueError(\n                \"Output mode is invalid, it must be one of \"\n                f\"{', '.join(all_modes)}. Received: mode={mode}\"\n            )\n\n        if scaling is not None and scaling not in [\"density\", \"spectrum\"]:\n            raise ValueError(\n                \"Scaling is invalid, it must be `None`, 'density' \"\n                f\"or 'spectrum'. Received scaling={scaling}\"\n            )\n\n        if padding not in [\"valid\", \"same\"]:\n            raise ValueError(\n                \"Padding is invalid, it should be 'valid', 'same'. \"\n                f\"Received: padding={padding}\"\n            )\n\n        if isinstance(window, str):\n            # throws an exception for invalid window function\n            scipy.signal.get_window(window, 1)\n\n        super().__init__(**kwargs)\n\n        self.mode = mode\n\n        self.frame_length = frame_length\n        self.frame_step = frame_step\n        self._frame_step = frame_step or self.frame_length // 2\n        self.fft_length = fft_length\n        self._fft_length = fft_length or (\n            2 ** int(math.ceil(math.log2(frame_length)))","sourceCodeStart":166,"sourceCodeEnd":202,"githubUrl":"https://github.com/keras-team/keras/blob/7a34a03db60bf60042242d6a556fc3be119046a5/keras/src/layers/preprocessing/stft_spectrogram.py#L166-L202","documentation":"Error \"Padding is invalid, it should be 'valid', 'same'. Received: padding={padding}\" thrown in keras-team/keras.","triggerScenarios":"Thrown at keras/src/layers/preprocessing/stft_spectrogram.py:184 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"}