{"record":{"id":"a234cfdbc8baf2af","repo":"tensorflow/models","slug":"shape-not-supported","errorCode":null,"errorMessage":"Shape not supported, {}, {}","messagePattern":"Shape not supported, (.+?), (.+?)","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"official/modeling/fast_training/experimental/tf2_utils_2x_wide.py","lineNumber":161,"sourceCode":"    var_to.assign(expand_vector(var_from_np))\n    return\n\n  a_from, z_from = shape_from[0], shape_from[-1]\n  a_to, z_to = shape_to[0], shape_to[-1]\n\n  if a_to == 2 * a_from and z_to == z_from:\n    var_to.assign(expand_1_axis(var_from_np, epsilon=epsilon, axis=0))\n    return\n\n  if a_to == a_from and z_to == 2 * z_from:\n    var_to.assign(expand_1_axis(var_from_np, epsilon=epsilon, axis=-1))\n    return\n\n  if a_to == 2 * a_from and z_to == 2 * z_from:\n    var_to.assign(expand_2_axes(var_from_np, epsilon=epsilon))\n    return\n\n  raise ValueError(\"Shape not supported, {}, {}\".format(shape_from, shape_to))\n\n\ndef model_to_model_2x_wide(model_from: tf.Module,\n                           model_to: tf.Module,\n                           epsilon: float = 0.1):\n  \"\"\"Expands a model to a wider version.\n\n  Also makes sure that the output of the model is not changed after expanding.\n  For example:\n  ```\n  model_narrow = tf_keras.Sequential()\n  model_narrow.add(tf_keras.Input(shape=(3,)))\n  model_narrow.add(tf_keras.layers.Dense(4))\n  model_narrow.add(tf_keras.layers.Dense(1))\n\n  model_wide = tf_keras.Sequential()\n  model_wide.add(tf_keras.Input(shape=(6,)))\n  model_wide.add(tf_keras.layers.Dense(8))","sourceCodeStart":143,"sourceCodeEnd":179,"githubUrl":"https://github.com/tensorflow/models/blob/e006f5f0d534913e49c1f1dae87364039fa607e2/official/modeling/fast_training/experimental/tf2_utils_2x_wide.py#L143-L179","documentation":"Error \"Shape not supported, {}, {}\" thrown in tensorflow/models.","triggerScenarios":"Thrown at official/modeling/fast_training/experimental/tf2_utils_2x_wide.py:161 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":"e006f5f0d534913e49c1f1dae87364039fa607e2","analyzedAt":"2026-08-24T14:09:15.576Z","schemaVersion":2},"datasetVersion":"2026-08-24T17:17:21.512Z"}