SAPUI5 PWA offline issue found.

Hi all,

I have been trying to create a SAPUI5 application that can work offline (with no internet) and followed this blog;
https://a.kabachnik.info/pwa-with-sap-openui5.html

Once I created my Gruntfile.js and built my application, it created the component-preload.js file... once ran in offline mode after running it in online mode (to store all the files) it gave this error.

I have attached my sample project to the GitHub.. https://github.com/fwisk/sapui5-pwasample

Any help would be appreciated!

Thank you in advance.