오류

UnknownError                              Traceback (most recent call last)

<ipython-input-38-db48157b102c> in <module>
      2                     validation_data=(validation_padded, validation_labels),
      3                     callbacks=[checkpoint],
----> 4                     epochs=epochs)

/usr/local/lib/python3.7/dist-packages/tensorflow/python/eager/execute.py in quick_execute(op_name, num_outputs, inputs, attrs, ctx, name)
     53     ctx.ensure_initialized()
     54     tensors = pywrap_tfe.TFE_Py_Execute(ctx._handle, device_name, op_name,
---> 55                                         inputs, attrs, num_outputs)
     56   except core._NotOkStatusException as e:
     57     if name is not None:

UnknownError: Graph execution error:

Fail to find the dnn implementation.
	 [[{{node CudnnRNN}}]]
	 [[sequential/bidirectional/forward_lstm/PartitionedCall]] [Op:__inference_train_function_9113]