{"record":{"id":"3eaa85ff815f013c","repo":"keras-team/keras","slug":"train-on-batch-is-not-supported-with-openvino-ba","errorCode":null,"errorMessage":"`train_on_batch` is not supported with openvino backend","messagePattern":"`train_on_batch` is not supported with openvino backend","errorType":"exception","errorClass":"NotImplementedError","httpStatus":null,"severity":"error","filePath":"keras/src/backend/openvino/trainer.py","lineNumber":354,"sourceCode":"            callbacks.on_test_batch_end(end_step, logs)\n            if self.stop_evaluating:\n                break\n        logs = pythonify_logs(self._get_metrics_result_or_logs(logs))\n        callbacks.on_test_end(logs)\n\n        if return_dict:\n            return logs\n        return self._flatten_metrics_in_order(logs)\n\n    def train_on_batch(\n        self,\n        x,\n        y=None,\n        sample_weight=None,\n        class_weight=None,\n        return_dict=False,\n    ):\n        raise NotImplementedError(\n            \"`train_on_batch` is not supported with openvino backend\"\n        )\n\n    def test_on_batch(\n        self,\n        x,\n        y=None,\n        sample_weight=None,\n        return_dict=False,\n    ):\n        self._assert_compile_called(\"test_on_batch\")\n        self.make_test_function()\n        self.reset_metrics()\n        logs = self.test_function([(x, y, sample_weight)])\n        logs = pythonify_logs(self._get_metrics_result_or_logs(logs))\n        if return_dict:\n            return logs\n        return self._flatten_metrics_in_order(logs)","sourceCodeStart":336,"sourceCodeEnd":372,"githubUrl":"https://github.com/keras-team/keras/blob/7a34a03db60bf60042242d6a556fc3be119046a5/keras/src/backend/openvino/trainer.py#L336-L372","documentation":"Error \"`train_on_batch` is not supported with openvino backend\" thrown in keras-team/keras.","triggerScenarios":"Thrown at keras/src/backend/openvino/trainer.py:354 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"}