NotImplementedError: Converter is not implemented (OperationDescription(domain='', operation_type='Loop', version=13))

[pzy2000]

Traceback (most recent call last):
File "issue_onnx2torch_002.py", line 15, in
torch_model = convert(onnx_model_path)
File "/opt/conda/envs/tf2onnx/lib/python3.7/site-packages/onnx2torch/converter.py", line 107, in convert
version=version,
File "/opt/conda/envs/tf2onnx/lib/python3.7/site-packages/onnx2torch/node_converters/registry.py", line 69, in get_converter
raise NotImplementedError(f'Converter is not implemented ({description})')
NotImplementedError: Converter is not implemented (OperationDescription(domain='', operation_type='Loop', version=13))

run the below codes to reproduce the above issue:

import numpy as np
import torch
from onnx2torch import convert

def _init_input(input_shape):
input_shape = list(input_shape)
input_shape[0] = 10
input_shape = tuple(input_shape)
input = np.random.rand(*input_shape)
return input

onnx_model_path = "lstm0-sinewave_origin.onnx"
torch_model = convert(onnx_model_path)

[pzy2000]

the onnx file can be downloaded here:
lstm0-sinewave_origin.zip