Html Webpack Plugin:
<pre>
  ReferenceError: VUE_APP_APP_TITLE is not defined
  
  - index.html:96 
    /usr/app/code/public/index.html:96:11
  
  - index.html:109 0971.module.exports
    /usr/app/code/public/index.html:109:3
  
  - index.js:284 
    [code]/[html-webpack-plugin]/index.js:284:18
  
</pre>