Traceback (most recent call last):
  File "/home/junqizhang/.config/nvim/plugged/markdown-preview.vim/autoload/server/server.py", line 70, in _dealLog
    ret = f(*args, **kwargs)
  File "/home/junqizhang/.config/nvim/plugged/markdown-preview.vim/autoload/server/server.py", line 104, in dealSocket
    data = WebSocket.recv(sock)
  File "/home/junqizhang/.config/nvim/plugged/markdown-preview.vim/autoload/server/server.py", line 251, in recv
    length = ord(data[1]) & 127
TypeError: ord() expected string of length 1, but int found
