Fail to bootstrap Kibana v6.3.2

[trex]

Ubuntu 18.04
NodeJS 8.11.3
Kibana tag v6.3.2
Repo https://github.com/elastic/kibana.git

I executed
yarn kbn bootstrap

And got the following error:
00h00m00s 0/0: : ERROR: [Errno 2] No such file or directory: 'kbn'

[trex]

I use nvm and have multiple NodeJS versions.

$ nvm ls
        v6.14.0
        v8.11.3
->      v8.11.4
default -> 8.11.4 (-> v8.11.4)
node -> stable (-> v8.11.4) (default)
stable -> 8.11 (-> v8.11.4) (default)
...

It appears that yarn should be installed if you switch to the newly installed version.

sudo apt-get install --no-install-recommends yarn


Ref.:

Yarn