Exception when trying to close the last window

[jubnzv]

Hi, thanks for this cool plugin.

I found a small issue. When I trying to close the last window that is a chadtree buffer, I get the following exception in the messages area:

Traceback (most recent call last):
  File "/home/jubnzv/.local/share/nvim/plugged/chadtree/rplugin/python3/chadtree/__init__.py", line 84, in run
    fut.result()
  File "/usr/lib/python3.8/concurrent/futures/_base.py", line 439, in result
    return self.__get_result()
  File "/usr/lib/python3.8/concurrent/futures/_base.py", line 388, in __get_result
    raise self._exception
  File "/home/jubnzv/.local/share/nvim/plugged/chadtree/rplugin/python3/chadtree/__init__.py", line 104, in run
    new_state = await fn(
  File "/home/jubnzv/.local/share/nvim/plugged/chadtree/rplugin/python3/chadtree/transitions.py", line 175, in c_quit
    await call(nvim, cont)
  File "/home/jubnzv/.local/share/nvim/plugged/chadtree/rplugin/python3/chadtree/nvim.py", line 27, in cont
    ret = fn()
  File "/home/jubnzv/.local/share/nvim/plugged/chadtree/rplugin/python3/chadtree/transitions.py", line 173, in cont
    kill_fm_windows(nvim, settings=settings)
  File "/home/jubnzv/.local/share/nvim/plugged/chadtree/rplugin/python3/chadtree/wm.py", line 136, in kill_fm_windows
    nvim.api.win_close(window, True)
  File "/home/jubnzv/.local/lib/python3.8/site-packages/pynvim/api/nvim.py", line 182, in request
    res = self._session.request(name, *args, **kwargs)
  File "/home/jubnzv/.local/lib/python3.8/site-packages/pynvim/msgpack_rpc/session.py", line 104, in request
    raise self.error_wrapper(err)
pynvim.api.common.NvimError: Vim:E444: Cannot close last window
Vim:E444: Cannot close last window

Steps to reproduce:

1. Open an arbitrary file with nvim: nvim $(mktemp)
2. Open chadtree: :CHADOpen<cr>
3. Close all other windows: <C-w>o
4. Try to close chadtree window: q

[ms-jpq]

Thanks for the report.

I fixed it:

b033bbc