[Issue#894] Developer: cncjs version 1.10.5 build with yarn fails – problem with jest

#### Description
OS: Ubuntu 24.04
The exact same procedure worked with cncjs version 1.10.3 without problems

Procedure:

Install Node version manager:
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.1/install.sh | bash

Install Node version 14:
nvm install 14

Set Node version to be used:
nvm use 14
Output:
Now using node v14.21.3 (npm v6.14.18)

Install yarn:
npm install -g yarn

Download/Clone cncjs code:
git clone https://github.com/cncjs/cncjs.git

Change into code directory:
cd cncjs

Install the dependencies:
yarn

Build the app:
yarn build
Leads to error:
ERROR in [eslint] Failed to load plugin ‘jest’ declared in ‘.eslintrc.js’: Unexpected token ‘||=’

Start the cncjs server:
bin/cncjs

Open web browser at
http://127.0.1.1:8000/
Leads to error:
Error: Failed to lookup view “index.hbs” in views directories “github/cncjs/dist/cncjs/app” or “github/cncjs/dist/cncjs/server/views”

web browser displays:
An error occurred!
Error:

#### Versions

– CNCjs: 1.10.5
– Node.js: v14.21.3
– NPM: v6.14.18

#### How Do You Install CNCjs?

– [ ] NPM
– [ ] Download the CNCjs Desktop Application
– [ x] git clone source for development
#### CNC Controller

– [x] Grbl
– [ ] Smoothieware
– [ ] TinyG/g2core

#### Hardware

– [ ] Raspberry Pi
– [x] Desktop or Laptop
– [ ] Mobile Device

#### Operating System

– [ ] Not Applicable
– [ ] Windows
– [ ] Mac
– [x] Linux