Update 2.3.2 on Ubuntu 18.

Help me update Rocket.Chat.
Installed on Ubuntu 18.04.4 LTS.
The Rocket.Chat version 2.3.2.
I am trying to install according to the instructions, but the contents of the archive are different from what was originally installed on the server. Even the version 2.3.2 on github differs from the one that is installed.
Since the instructions say that you need to update sequentially, I first try to update this way:

sudo systemctl stop rocketchat

sudo -i

mv /opt/rocket /opt/old.rocket

sudo npm install -g inherits n && sudo n 8.17.0

curl -L https://github.com/RocketChat/Rocket.Chat/archive/refs/tags/2.4.14.tar.gz -o /tmp/rocket.chat.tgz

tar -xzf /tmp/rocket.chat.tgz -C /tmp

cd /tmp/Rocket.Chat-2.4.14/server && npm install

Already at this stage I have a lot of mistakes:
npm WARN tar ENOENT no such file or.txt

sudo mv /tmp/Rocket.Chat-2.4.14 /opt/rocket

Rename the folder server to Rocket.Chat because rocketchat.service:

ExecStart=/usr/local/bin/node /opt/rocket/Rocket.Chat/main.js

But in the end I get:

Start by reviewing the Ubuntu 18.04 service configuration and the Rocket.Chat 2.4.14 archive installation steps shown in the issue, then reproduce the npm install output and inspect the attached error. Compare the installed 2.3.2 layout with the archive contents; done means the sequential update completes and rocketchat.service starts successfully.