google.protobuf.text_format.ParseError: 8:5 : Message type "second.protos.VoxelNet" has no field named "num_class".

[Joiequ]

Hello, I have the following error while running the code. How can I solve it?
config_path: configs/pointpillars/car/xyres_16.proto
Traceback (most recent call last):
File "pytorch/train.py", line 883, in
fire.Fire()
File "/home/cqu123/anaconda3/lib/python3.6/site-packages/fire/core.py", line 141, in Fire
component_trace = _Fire(component, args, parsed_flag_args, context, name)
File "/home/cqu123/anaconda3/lib/python3.6/site-packages/fire/core.py", line 471, in _Fire
target=component.name)
File "/home/cqu123/anaconda3/lib/python3.6/site-packages/fire/core.py", line 681, in _CallAndUpdateTrace
component = fn(*varargs, **kwargs)
File "pytorch/train.py", line 615, in evaluate
text_format.Merge(proto_str, config)
File "/home/cqu123/anaconda3/envs/pointpillars/lib/python3.6/site-packages/google/protobuf/text_format.py", line 536, in Merge
descriptor_pool=descriptor_pool)
File "/home/cqu123/anaconda3/envs/pointpillars/lib/python3.6/site-packages/google/protobuf/text_format.py", line 590, in MergeLines
return parser.MergeLines(lines, message)
File "/home/cqu123/anaconda3/envs/pointpillars/lib/python3.6/site-packages/google/protobuf/text_format.py", line 623, in MergeLines
self._ParseOrMerge(lines, message)
File "/home/cqu123/anaconda3/envs/pointpillars/lib/python3.6/site-packages/google/protobuf/text_format.py", line 638, in _ParseOrMerge
self._MergeField(tokenizer, message)
File "/home/cqu123/anaconda3/envs/pointpillars/lib/python3.6/site-packages/google/protobuf/text_format.py", line 763, in _MergeField
merger(tokenizer, message, field)
File "/home/cqu123/anaconda3/envs/pointpillars/lib/python3.6/site-packages/google/protobuf/text_format.py", line 837, in _MergeMessageField
self._MergeField(tokenizer, sub_message)
File "/home/cqu123/anaconda3/envs/pointpillars/lib/python3.6/site-packages/google/protobuf/text_format.py", line 763, in _MergeField
merger(tokenizer, message, field)
File "/home/cqu123/anaconda3/envs/pointpillars/lib/python3.6/site-packages/google/protobuf/text_format.py", line 837, in _MergeMessageField
self._MergeField(tokenizer, sub_message)
File "/home/cqu123/anaconda3/envs/pointpillars/lib/python3.6/site-packages/google/protobuf/text_format.py", line 730, in _MergeField
(message_descriptor.full_name, name))
google.protobuf.text_format.ParseError: 8:5 : Message type "second.protos.VoxelNet" has no field named "num_class".

[gdb123]

have the same error as u, did u solve it?