onnx2caffe MatMul error

[HappyKerry]

Traceback (most recent call last):
File "convert.py", line 231, in
sys.exit(main())
File "convert.py", line 221, in main
Convert(args.dict)
File "convert.py", line 162, in Convert
ONNXConvert(model_path, caffe_model_path, param)
File "/home/root/work/x2caffe-master/x2caffe/onnx2caffe/convert.py", line 62, in convert
caffe_net = model.save(caffe_model_path)
File "/home/root/work/x2caffe-master/x2caffe/base_Model.py", line 37, in save
return save_caffe_model(caffe_model_path, self.layers)
File "/home/root/work/x2caffe-master/x2caffe/caffe_transform.py", line 110, in save_caffe_model
proto_layers.append(layer._to_proto())
File "/home/root/work/x2caffe-master/x2caffe/caffe_transform.py", line 93, in _to_proto
assign_proto(layer, key, value)
File "/home/root/work/x2caffe-master/x2caffe/caffe_transform.py", line 33, in assign_proto
is_repeated_field = hasattr(getattr(proto, name), 'extend')
AttributeError: matmul_param