onnx转换mxnet是遇到slice操作没有attribute

以下的讨论是基于:
MXNet版本: 可运行这个来得到pip show mxnet; python -c 'import mxnet; print mxnet.__version__'
操作系统: ubuntu18.04 mxnet-cu102_1.7.0 onnx1.7.0
报错如下:
Traceback (most recent call last):
File “model_onnx2mxnet.py”, line 32, in
model_onnx2mxnet(fpath)
File “model_onnx2mxnet.py”, line 15, in model_onnx2mxnet
sym, arg, aux = onnx_mxnet.import_model(fpath)
File “/data/pyenv/versions/3.8.2/lib/python3.8/site-packages/mxnet/contrib/onnx/onnx2mx/import_model.py”, line 61, in import_model
sym, arg_params, aux_params = graph.from_onnx(model_proto.graph)
File “/data/pyenv/versions/3.8.2/lib/python3.8/site-packages/mxnet/contrib/onnx/onnx2mx/import_onnx.py”, line 129, in from_onnx
mxnet_sym = self._convert_operator(node_name, op_name, onnx_attr, inputs)
File “/data/pyenv/versions/3.8.2/lib/python3.8/site-packages/mxnet/contrib/onnx/onnx2mx/import_onnx.py”, line 61, in _convert_operator
op_name, new_attrs, inputs = convert_map[op_name](attrs, inputs, self)
File “/data/pyenv/versions/3.8.2/lib/python3.8/site-packages/mxnet/contrib/onnx/onnx2mx/_op_translations.py”, line 511, in _slice
end = list(new_attrs.get(‘end’))
TypeError: ‘NoneType’ object is not iterable

打印model_proto.graph.node, 发现Slice没有attribute这个熟悉,即没有(‘axes’ :,‘ends’ , ‘starts’)导致:
input: “264”
input: “265”
input: “263”
input: “266”
output: “267”
name: “Slice_4”
op_type: “Slice”
,
output: “268”

@all, 有什么解决方法吗