apt-vim install not working

[suuuehgi]

~/apt-vim> ./apt-vim install
Traceback (most recent call last):
  File "./apt-vim", line 898, in <module>
    apt_vim = aptvim()
  File "./apt-vim", line 153, in __init__
    self.VIM_CONFIG = self.load_vim_config() if VIM_CONFIG is None else VIM_CONFIG
  File "./apt-vim", line 185, in load_vim_config
    return json.loads(json_file)
  File "/usr/lib/python3.7/json/__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python3.7/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python3.7/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 81 column 24 (char 2711)

Python 3.7.0