{"record":{"id":"a0150294a3f38791","repo":"tensorflow/models","slug":"at-most-one-of-hub-module-url-and-init-checkpoi-a01502","errorCode":null,"errorMessage":"At most one of `hub_module_url` and `init_checkpoint` can be specified.","messagePattern":"At most one of `hub_module_url` and `init_checkpoint` can be specified\\.","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"official/projects/text_classification_example/classification_example.py","lineNumber":67,"sourceCode":"  hub_module_url: str = ''\n  model: ModelConfig = dataclasses.field(default_factory=ModelConfig)\n\n  num_classes = 2\n  class_names = ['A', 'B']\n  train_data: cfg.DataConfig = dataclasses.field(\n      default_factory=classification_data_loader.ClassificationExampleDataConfig\n  )\n  validation_data: cfg.DataConfig = dataclasses.field(\n      default_factory=classification_data_loader.ClassificationExampleDataConfig\n  )\n\n\nclass ClassificationExampleTask(base_task.Task):\n  \"\"\"Task object for classification.\"\"\"\n\n  def build_model(self) -> tf_keras.Model:\n    if self.task_config.hub_module_url and self.task_config.init_checkpoint:\n      raise ValueError('At most one of `hub_module_url` and '\n                       '`init_checkpoint` can be specified.')\n    if self.task_config.hub_module_url:\n      encoder_network = utils.get_encoder_from_hub(\n          self.task_config.hub_module_url)\n    else:\n      encoder_network = encoders.build_encoder(self.task_config.model.encoder)\n\n    return models.BertClassifier(\n        network=encoder_network,\n        num_classes=len(self.task_config.class_names),\n        initializer=tf_keras.initializers.TruncatedNormal(\n            stddev=self.task_config.model.head_initializer_range),\n        dropout_rate=self.task_config.model.head_dropout)\n\n  def build_losses(self, labels, model_outputs, aux_losses=None) -> tf.Tensor:\n    loss = tf_keras.losses.sparse_categorical_crossentropy(\n        labels, tf.cast(model_outputs, tf.float32), from_logits=True)\n    return tf_utils.safe_mean(loss)","sourceCodeStart":49,"sourceCodeEnd":85,"githubUrl":"https://github.com/tensorflow/models/blob/e006f5f0d534913e49c1f1dae87364039fa607e2/official/projects/text_classification_example/classification_example.py#L49-L85","documentation":"Error \"At most one of `hub_module_url` and `init_checkpoint` can be specified.\" thrown in tensorflow/models.","triggerScenarios":"Thrown at official/projects/text_classification_example/classification_example.py:67 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"}