{"record":{"id":"1d8a723aff309246","repo":"tensorflow/models","slug":"unsupported-act-fn","errorCode":null,"errorMessage":"Unsupported act_fn {}","messagePattern":"Unsupported act_fn (.+?)","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"official/projects/maxvit/modeling/common_ops.py","lineNumber":58,"sourceCode":"  elif act_fn == 'leaky_relu':\n    return tf.nn.leaky_relu(features)\n  elif act_fn == 'selu':\n    return tf.nn.selu(features)\n  elif act_fn == 'mish':\n    return features * tf.math.tanh(tf.math.softplus(features))\n  elif act_fn == 'gelu':\n    return (\n        0.5\n        * features\n        * (\n            1\n            + tf.tanh(\n                np.sqrt(2 / np.pi) * (features + 0.044715 * tf.pow(features, 3))\n            )\n        )\n    )\n  else:\n    raise ValueError('Unsupported act_fn {}'.format(act_fn))\n\n\ndef get_act_fn(act_fn):\n  if act_fn is None:\n    act_fn = 'gelu'\n  if isinstance(act_fn, str):\n    return functools.partial(activation_fn, act_fn=act_fn)\n  elif callable(act_fn):\n    return act_fn\n  else:\n    raise ValueError('Unsupported act_fn %s.' % act_fn)\n\n\ndef pooling_2d(inputs, pool_type, stride, **kwargs):\n  \"\"\"Perform 2D pooling.\"\"\"\n  if stride > 1:\n    if pool_type == 'max':\n      pool_op = tf_keras.layers.MaxPool2D","sourceCodeStart":40,"sourceCodeEnd":76,"githubUrl":"https://github.com/tensorflow/models/blob/e006f5f0d534913e49c1f1dae87364039fa607e2/official/projects/maxvit/modeling/common_ops.py#L40-L76","documentation":"Error \"Unsupported act_fn {}\" thrown in tensorflow/models.","triggerScenarios":"Thrown at official/projects/maxvit/modeling/common_ops.py:58 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"}