NR no longer works on some remote machines

Sorry, but I get that it can't find the command "node-red".

I didn't un-install it.

The other machines I did the exact same commands on work.

It is TWO machines that say NR is not installed.

If/when I run the command:

bash <(curl -sL https://raw.githubusercontent.com/node-red/raspbian-deb-package/master/resources/update-nodejs-and-nodered)

It starts to do things then it says/goes.....

This can take 20-30 minutes on the slower Pi versions - please wait.

  Stop Node-RED                       ✔
  Remove old version of Node-RED      ✔
  Remove old version of Node.js       -
  Update Node.js LTS                  ✘   Failed to install Node.js - Exit

Looking at log I get/see:

Started : Wed 1 Aug 20:36:40 AEST 2018
Running for user pi at /home/pi
Found global nodes:   :
Reading package lists...
Building dependency tree...
Reading state information...
Package 'nodered' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Reading package lists...
Building dependency tree...
Reading state information...
nodejs is already the newest version (8.11.1~dfsg-2~bpo9+1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

Package 'nodered' is not installed, so not removed

Well, it was before I ran the command - well ORIGINALLY it was. Now all it says is it isn't installed.

I did NOT un-install it. Who did? Beats me.

Can you understand that if it was installed and I ran an UPDATE script and subsequently it says it isn't installed, then I am unable to understand what is going on or how to fix it.