E121: Undefined variable: kind when run :Vista

[Sinderella]

Describe the bug
I recently updated the plugin and when vim loads the sidebar automatically, it gives me the following error messages:

Error detected while processing function <SNR>182_on_exit[4]..<SNR>182_ExtractLinewise[5]..vista#parser#ctags#FromExtendedRaw[12]..<SNR>196_ParseTagfield:
line    9:
E121: Undefined variable: kind
Press ENTER or type command to continue
Error detected while processing function <SNR>182_on_exit[4]..<SNR>182_ExtractLinewise[5]..vista#parser#ctags#FromExtendedRaw[12]..<SNR>196_ParseTagfield:
line    9:
E116: Invalid arguments for function index
Press ENTER or type command to continue
Error detected while processing function <SNR>182_on_exit[4]..<SNR>182_ExtractLinewise[5]..vista#parser#ctags#FromExtendedRaw[12]..<SNR>196_ParseTagfield:
line    9:
E15: Invalid expression: index(t:vista.kinds, kind) == -1

Environment:

• OS: Linux Mint 19
• Vim/Neovim version: NVIM v0.4.0-386-gced980ff1
• This plugin version: c20cb84833e9e8fa730f98f92303f724e0a007d

Minimal vimrc to reproduce

call plug#begin('~/.vim/plugged')
Plug 'liuchengxu/vista.vim'
call plug#end()

Steps to reproduce given the above minimal vimrc

1. Install the plugin using vimplug
2. Open a file with vim
3. Run :Vista

Expected behavior
It shouldn't give the error messages as it was fine before the last update.

Actual behavior
Display error messages.

Screenshot or gif (if possible)
See the error messages above.

[liuchengxu]

Sorry for the inconvenience, should work as before now. vista.vim is still in a rapid development, if you do prefer a stable one, please pin to a commit.

[Sinderella]

No worries, it's a great plugin, and testing and raising issues would be the only thing I can help for the moment.