Occasional error starting up

[davidosomething]

  File "/Users/dotrakoun/.config/pyenv/versions/3.7.0/bin/nvr", line 11, in <module>
    sys.exit(main())
  File "/Users/dotrakoun/.config/pyenv/versions/3.7.0/lib/python3.7/site-packages/nvr/nvr.py", line 561, in main
    nvr.server.close()
AttributeError: 'NoneType' object has no attribute 'close'```

[mhinz]

"Occasional"? :)

• Does it only happen if nvr itself starts a new nvim process or also when it uses an already existing process?
• Does it happen with just nvr (without arguments) as well?

[davidosomething]

i always start with PYTHONWARNINGS=ignore nvr -s (and optionally a filename)
it might be when there's a hanging process (e.g. crashed terminal leaving invalid socket file)

just upgraded to your latest release, will let you know if i see it again

[mhinz]

Maybe PYTHONWARNINGS=default would get us a hint. :)

In the meanwhile I'll check if I can break nvr by giving it stale sockets etc.

[mhinz]

I did another few fixes today. Accessing nvr.server when it's None should not happen anymore.

I also fixed a few warnings that should only happen with PYTHONWARNINGS=default, but some can't be fixed from my side. They need changes in pynvim. But these are unclosed transport warnings and can be ignored.

Please reopen this as soon as you get an issue again.