{"record":{"id":"c69706068262c794","repo":"keras-team/keras","slug":"duplicate-axes-are-not-allowed-received-axis-se","errorCode":null,"errorMessage":"Duplicate axes are not allowed. Received: axis={self.axis}","messagePattern":"Duplicate axes are not allowed\\. Received: axis=(.+?)","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"keras/src/layers/normalization/layer_normalization.py","lineNumber":157,"sourceCode":"\n        self.epsilon = epsilon\n        self.center = center\n        self.scale = scale\n        self.rms_scaling = rms_scaling\n        self.beta_initializer = initializers.get(beta_initializer)\n        self.gamma_initializer = initializers.get(gamma_initializer)\n        self.beta_regularizer = regularizers.get(beta_regularizer)\n        self.gamma_regularizer = regularizers.get(gamma_regularizer)\n        self.beta_constraint = constraints.get(beta_constraint)\n        self.gamma_constraint = constraints.get(gamma_constraint)\n\n        self.supports_masking = True\n        self.autocast = False\n\n    def build(self, input_shape):\n        axes = canonicalize_axes(self.axis, len(input_shape))\n        if len(set(axes)) != len(axes):\n            raise ValueError(\n                f\"Duplicate axes are not allowed. Received: axis={self.axis}\"\n            )\n        self.axis = sorted(axes)\n        shape = tuple(input_shape[dim] for dim in self.axis)\n        if self.scale or self.rms_scaling:\n            self.gamma = self.add_weight(\n                name=\"gamma\",\n                shape=shape,\n                initializer=self.gamma_initializer,\n                regularizer=self.gamma_regularizer,\n                constraint=self.gamma_constraint,\n                trainable=True,\n                autocast=False,\n            )\n        else:\n            self.gamma = None\n\n        if self.center and not self.rms_scaling:","sourceCodeStart":139,"sourceCodeEnd":175,"githubUrl":"https://github.com/keras-team/keras/blob/7a34a03db60bf60042242d6a556fc3be119046a5/keras/src/layers/normalization/layer_normalization.py#L139-L175","documentation":"Error \"Duplicate axes are not allowed. Received: axis={self.axis}\" thrown in keras-team/keras.","triggerScenarios":"Thrown at keras/src/layers/normalization/layer_normalization.py:157 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"}