{"record":{"id":"176f7f295dcfa9e9","repo":"tensorflow/models","slug":"stem-type-stem-type-not-supported","errorCode":null,"errorMessage":"Stem type {stem_type} not supported.","messagePattern":"Stem type (.+?) not supported\\.","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"official/projects/const_cl/modeling/backbones/resnet_3d.py","lineNumber":220,"sourceCode":"    if stem_type == 'v0':\n      self._stem_conv = layers.Conv3D(\n          filters=64,\n          kernel_size=[self._stem_conv_temporal_kernel_size, 7, 7],\n          strides=[self._stem_conv_temporal_stride, 2, 2],\n          use_bias=False,\n          padding='same',\n          kernel_initializer=self._kernel_initializer,\n          kernel_regularizer=self._kernel_regularizer,\n          bias_regularizer=self._bias_regularizer,\n          name='stem')\n      self._stem_bn = self._norm(\n          axis=self._bn_axis,\n          momentum=self._norm_momentum,\n          epsilon=self._norm_epsilon,\n          name='stem/batch_norm')\n      self._stem_activation = tf_utils.get_activation(self._activation)\n    else:\n      raise ValueError(f'Stem type {stem_type} not supported.')\n\n  def _build_block_group(\n      self,\n      inputs: tf.Tensor,\n      filters: int,\n      temporal_kernel_sizes: Tuple[int],\n      temporal_strides: int,\n      spatial_strides: int,\n      block_fn: Callable[\n          ..., tf_keras.layers.Layer] = nn_blocks_3d.BottleneckBlock3D,\n      block_repeats: int = 1,\n      stochastic_depth_drop_rate: float = 0.0,\n      use_self_gating: bool = False,\n      name: str = 'block_group'):\n    \"\"\"Creates one group of blocks for the ResNet3D model.\n\n    Args:\n      inputs: A `tf.Tensor` of size `[batch, channels, height, width]`.","sourceCodeStart":202,"sourceCodeEnd":238,"githubUrl":"https://github.com/tensorflow/models/blob/e006f5f0d534913e49c1f1dae87364039fa607e2/official/projects/const_cl/modeling/backbones/resnet_3d.py#L202-L238","documentation":"Error \"Stem type {stem_type} not supported.\" thrown in tensorflow/models.","triggerScenarios":"Thrown at official/projects/const_cl/modeling/backbones/resnet_3d.py:220 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"}