[null,null,["Last updated 2020-10-01 UTC."],[],[],null,["# tf.errors.UnavailableError\n\n\u003cbr /\u003e\n\n|------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------|\n| [TensorFlow 1 version](/versions/r1.15/api_docs/python/tf/errors/UnavailableError) | [View source on GitHub](https://github.com/tensorflow/tensorflow/blob/v2.1.0/tensorflow/python/framework/errors_impl.py#L458-L469) |\n\nRaised when the runtime is currently unavailable.\n\nInherits From: [`OpError`](../../tf/errors/OpError)\n\n#### View aliases\n\n\n**Compat aliases for migration**\n\nSee\n[Migration guide](https://www.tensorflow.org/guide/migrate) for\nmore details.\n\n[`tf.compat.v1.errors.UnavailableError`](/api_docs/python/tf/errors/UnavailableError)\n\n\u003cbr /\u003e\n\n tf.errors.UnavailableError(\n node_def, op, message\n )\n\nThis exception is not currently used.\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Attributes ---------- ||\n|--------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `error_code` | The integer error code that describes the error. |\n| `message` | The error message that describes the error. |\n| `node_def` | The `NodeDef` proto representing the op that failed. |\n| `op` | The operation that failed, if known. \u003cbr /\u003e | **Note:** If the failed op was synthesized at runtime, e.g. a `Send` or `Recv` op, there will be no corresponding [`tf.Operation`](../../tf/Operation) object. In that case, this will return `None`, and you should instead use the [`tf.errors.OpError.node_def`](../../tf/errors/OpError#node_def) to discover information about the op. |"]]