2017-03-20 16:18:43,558 - ERROR - Error occurred while loading global extra conf /home/zizheng/.vim/.ycm_extra_conf.py
Traceback (most recent call last):
  File "/home/zizheng/.vim/bundle/YouCompleteMe/third_party/ycmd/ycmd/../ycmd/extra_conf_store.py", line 94, in _CallGlobalExtraConfMethod
    module = Load( global_ycm_extra_conf, force = True )
  File "/home/zizheng/.vim/bundle/YouCompleteMe/third_party/ycmd/ycmd/../ycmd/extra_conf_store.py", line 173, in Load
    module = LoadPythonSource( _RandomName(), module_file )
  File "/home/zizheng/.vim/bundle/YouCompleteMe/third_party/ycmd/ycmd/../ycmd/utils.py", line 402, in LoadPythonSource
    return importlib.machinery.SourceFileLoader( name, pathname ).load_module()
  File "<frozen importlib._bootstrap_external>", line 399, in _check_name_wrapper
  File "<frozen importlib._bootstrap_external>", line 823, in load_module
  File "<frozen importlib._bootstrap_external>", line 682, in load_module
  File "<frozen importlib._bootstrap>", line 251, in _load_module_shim
  File "<frozen importlib._bootstrap>", line 675, in _load
  File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed
  File "/home/zizheng/.vim/.ycm_extra_conf.py", line 32, in <module>
    import ycm_core
ImportError: libtinfo.so.5: cannot open shared object file: No such file or directory
2017-03-20 16:18:43,559 - ERROR - libtinfo.so.5: cannot open shared object file: No such file or directory
Traceback (most recent call last):
  File "/home/zizheng/.vim/bundle/YouCompleteMe/third_party/ycmd/ycmd/server_utils.py", line 95, in CompatibleWithCurrentCore
    ycm_core = ImportCore()
  File "/home/zizheng/.vim/bundle/YouCompleteMe/third_party/ycmd/ycmd/server_utils.py", line 87, in ImportCore
    import ycm_core as ycm_core
ImportError: libtinfo.so.5: cannot open shared object file: No such file or directory