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tensorflow.python.framework.errors_impl.InvalidArgumentError: Trying to access element 62 in a list with 62 elements.

See original GitHub issue

What this error comes from?

access 62 with list elements only 62?

train]:   0%|                                                                                                                                             | 0/200000 [00:00<?, ?it/s]2020-10-16 22:28:20.499294: W tensorflow/core/grappler/optimizers/loop_optimizer.cc:906] Skipping loop optimization for Merge node with control input: cond/branch_executed/_8
Traceback (most recent call last):
  File "examples/tacotron2/train_tacotron2.py", line 488, in <module>
    main()
  File "examples/tacotron2/train_tacotron2.py", line 476, in main
    trainer.fit(
  File "/media/jintian/samsung/source/ai/swarm/exp/TensorFlowTTS/tensorflow_tts/trainers/base_trainer.py", line 870, in fit
    self.run()
  File "/media/jintian/samsung/source/ai/swarm/exp/TensorFlowTTS/tensorflow_tts/trainers/base_trainer.py", line 101, in run
    self._train_epoch()
  File "/media/jintian/samsung/source/ai/swarm/exp/TensorFlowTTS/tensorflow_tts/trainers/base_trainer.py", line 123, in _train_epoch
    self._train_step(batch)
  File "examples/tacotron2/train_tacotron2.py", line 109, in _train_step
    self.one_step_forward(batch)
  File "/home/jintian/anaconda3/lib/python3.8/site-packages/tensorflow/python/eager/def_function.py", line 780, in __call__
    result = self._call(*args, **kwds)
  File "/home/jintian/anaconda3/lib/python3.8/site-packages/tensorflow/python/eager/def_function.py", line 840, in _call
    return self._stateless_fn(*args, **kwds)
  File "/home/jintian/anaconda3/lib/python3.8/site-packages/tensorflow/python/eager/function.py", line 2829, in __call__
    return graph_function._filtered_call(args, kwargs)  # pylint: disable=protected-access
  File "/home/jintian/anaconda3/lib/python3.8/site-packages/tensorflow/python/eager/function.py", line 1843, in _filtered_call
    return self._call_flat(
  File "/home/jintian/anaconda3/lib/python3.8/site-packages/tensorflow/python/eager/function.py", line 1923, in _call_flat
    return self._build_call_outputs(self._inference_function.call(
  File "/home/jintian/anaconda3/lib/python3.8/site-packages/tensorflow/python/eager/function.py", line 545, in call
    outputs = execute.execute(
  File "/home/jintian/anaconda3/lib/python3.8/site-packages/tensorflow/python/eager/execute.py", line 59, in quick_execute
    tensors = pywrap_tfe.TFE_Py_Execute(ctx._handle, device_name, op_name,
tensorflow.python.framework.errors_impl.InvalidArgumentError:    Trying to access element 62 in a list with 62 elements.
	 [[{{node while_19/body/_1/while/TensorArrayV2Read_1/TensorListGetItem}}]]
	 [[tacotron2/encoder/bilstm/forward_lstm/PartitionedCall]] [Op:__inference__one_step_forward_23575]

Function call stack:
_one_step_forward -> _one_step_forward -> _one_step_forward