{"record":{"id":"08dc178605b78b7e","repo":"keras-team/keras","slug":"received-an-invalid-value-for-argument-value-dim","errorCode":null,"errorMessage":"Received an invalid value for argument `value_dim`, expected a positive integer or `None`. Received: value_dim={value_dim}","messagePattern":"Received an invalid value for argument `value_dim`, expected a positive integer or `None`\\. Received: value_dim=(.+?)","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"keras/src/layers/attention/multi_head_attention.py","lineNumber":150,"sourceCode":"        bias_constraint=None,\n        use_gate=False,\n        seed=None,\n        **kwargs,\n    ):\n        if not isinstance(num_heads, int) or num_heads <= 0:\n            raise ValueError(\n                \"Received an invalid value for argument `num_heads`, \"\n                f\"expected a positive integer. Received: num_heads={num_heads}\"\n            )\n        if not isinstance(key_dim, int) or key_dim <= 0:\n            raise ValueError(\n                \"Received an invalid value for argument `key_dim`, expected \"\n                f\"a positive integer. Received: key_dim={key_dim}\"\n            )\n        if value_dim is not None and (\n            not isinstance(value_dim, int) or value_dim <= 0\n        ):\n            raise ValueError(\n                \"Received an invalid value for argument `value_dim`, \"\n                \"expected a positive integer or `None`. Received: \"\n                f\"value_dim={value_dim}\"\n            )\n        super().__init__(**kwargs)\n        self.supports_masking = True\n        self._num_heads = num_heads\n        self._key_dim = key_dim\n        self._value_dim = value_dim if value_dim else key_dim\n        self._dropout = dropout\n        self._use_bias = use_bias\n        self._use_gate = use_gate\n        if output_shape:\n            if isinstance(output_shape, int):\n                output_shape = (output_shape,)\n            try:\n                output_shape = tuple(output_shape)\n            except:","sourceCodeStart":132,"sourceCodeEnd":168,"githubUrl":"https://github.com/keras-team/keras/blob/7a34a03db60bf60042242d6a556fc3be119046a5/keras/src/layers/attention/multi_head_attention.py#L132-L168","documentation":"Error \"Received an invalid value for argument `value_dim`, expected a positive integer or `None`. Received: value_dim={value_dim}\" thrown in keras-team/keras.","triggerScenarios":"Thrown at keras/src/layers/attention/multi_head_attention.py:150 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"}