Cannot open file using g:floatLf_lf_open

[phongvcao]

When I tried the keybinding of g:floatLf_lf_open to open the file, I got the following message:

 pynvim.api.common.NvimError: Vim:E492: Not an editor command: LfFocusPrev

Here is my floatLf-nvim config:

" floatLf-nvim settinngs
let g:floatLf_autoclose = 1
let g:floatLf_border = 1
let g:floatLf_topleft_border = '┌'
let g:floatLf_topright_border = '┐' 
let g:floatLf_botleft_border = '└' 
let g:floatLf_botright_border = '┘' 
let g:floatLf_vertical_border = '│' 
let g:floatLf_horizontal_border = '─' 
let g:floatLf_lf_close = 'q'
let g:floatLf_lf_open = 'oo'
let g:floatLf_lf_split = 'ov'
let g:floatLf_lf_vsplit = 'oh'
let g:floatLf_lf_tab = 'ot'

Here is my nvim --version:

$ nvim --version
NVIM v0.4.3
Build type: Release
LuaJIT 2.1.0-beta3
Compilation: /usr/bin/cc -g -O2 -fdebug-prefix-map=/build/neovim-htvphN/neovim-0.4.3=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=1 -DDISABLE_LOG -Wdate-time -D_FORTIFY_SOURCE=1 -O2 -DNDEBUG -DMIN_LOG_LEVEL=3 -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wshadow -Wconversion -Wmissing-prototypes -Wimplicit-fallthrough -Wvla -fstack-protector-strong -fdiagnostics-color=always -DINCLUDE_GENERATED_DECLARATIONS -D_GNU_SOURCE -DNVIM_MSGPACK_HAS_FLOAT32 -DNVIM_UNIBI_HAS_VAR_FROM -I/build/neovim-htvphN/neovim-0.4.3/build/config -I/build/neovim-htvphN/neovim-0.4.3/src -I/usr/include -I/usr/include/lua5.1 -I/build/neovim-htvphN/neovim-0.4.3/build/src/nvim/auto -I/build/neovim-htvphN/neovim-0.4.3/build/include
Compiled by [email protected]

Features: +acl +iconv +tui
See ":help feature-compile"

   system vimrc file: "$VIM/sysinit.vim"
  fall-back for $VIM: "/usr/share/nvim"

Run :checkhealth for more info