Some issues

[crabcoding]

1. No file named network/run_contactopt.py (in quick demo)
2. When I tried to run the command: 'python network/run_gcncontact.py --split=demo --model=dgcnn', it reported the following error:
   workspace/s2contact/network.loader.pym line 26
   self.dataset = pickle.load(open(data, 'rb')) # Load pickle, can take many seconds
   ModuleNotFoundError: No moudle named 'contactopt'
3. When I tried to run the command: python network/run_eval.py --split=demo --model=dgcnn --vis, it reported the following error:
   No such file or directory: 'data/optimized_demo_dgcnn.pkl'

It seems that, some file or moudles are missing.