Hi, I have cloned the repo and excuted encoder.py with python 2.7 on linux 16.04. But, the terminal raise the error info: Segmentation fault (core dumped). And I further debugged the codes and found that the error was caused by self._SNDFILE = self._lib.sf_open(self._filename, open_mode, self._sf_info) in libsndfile.py. Could you help me to fix this problem?