docs/troubleshooting: Installing tree-sitter-cli fails with node 18

[mariasfiraiala]

I am trying to install LunarVim on Ubuntu 20.04. I made sure I had all the prerequisites installed, including node and npm, installed via nvm, as to avoid an EACCES error.

However with node at the latest LTS (v18.12.1 -> Hydrogen), installing tree-sitter-cli fails with:

npm ERR! code 1
npm ERR! path /home/maria/.nvm/versions/node/v18.12.1/lib/node_modules/tree-sitter-cli
npm ERR! command failed
npm ERR! command sh -c -- node install.js
npm ERR! Downloading https://github.com/tree-sitter/tree-sitter/releases/download/v0.20.7/tree-sitter-linux-x64.gz
npm ERR! node:events:491
npm ERR!       throw er; // Unhandled 'error' event
npm ERR!       ^
npm ERR! 
npm ERR! Error: connect ETIMEDOUT 64:ff9b::8c52:7903:443
npm ERR!     at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1300:16)
npm ERR! Emitted 'error' event on ClientRequest instance at:
npm ERR!     at TLSSocket.socketErrorListener (node:_http_client:494:9)
npm ERR!     at TLSSocket.emit (node:events:513:28)
npm ERR!     at emitErrorNT (node:internal/streams/destroy:151:8)
npm ERR!     at emitErrorCloseNT (node:internal/streams/destroy:116:3)
npm ERR!     at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
npm ERR!   errno: -110,
npm ERR!   code: 'ETIMEDOUT',
npm ERR!   syscall: 'connect',
npm ERR!   address: '64:ff9b::8c52:7903',
npm ERR!   port: 443
npm ERR! }
npm ERR! 
npm ERR! Node.js v18.12.1

After browsing the net I've come to the conclusion that it's something related to the IPv6 usage. I downgraded to node 16 (without disabling IPv6 on my machine) and the installation process was finally successful.

It might be a good idea to include these steps in the troubleshooting section, or at least a hint, as it actually saves the user from a lot of trouble 😉 . It is not a LunarVim issue, however it improves user experience (I was this close 👌 to give up and not try LunarVim at all).