https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md

https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md#lua_ls
https://luals.github.io/#neovim-install
    https://github.com/LuaLS/lua-language-server/releases
    https://github.com/LuaLS/lua-language-server/releases/download/3.8.3/lua-language-server-3.8.3-linux-x64.tar.gz
    https://github.com/williamboman/mason.nvim/issues/995


:LspInfo
https://github.com/williamboman/mason-lspconfig.nvim
https://github.com/neovim/nvim-lspconfig/tree/master

LSP configs active in this session (globally) ~
- Configured servers: lua_ls, html, cssls
...
- Language client log: ~/.local/state/nvim/lsp.log

https://github.com/LunarVim/LunarVim/issues/4617
https://github.com/LunarVim/LunarVim/issues/3413
...10.3/nvim-linux64/share/nvim/runtime/lua/vim/lsp/rpc.lua:800: 
Spawning language server with cmd: `{ "vscode-css-language-server", "--stdio" }` failed. The language server is either not installed, missing from PATH, or not executable.