MDK Mobile App returning error unknown error

Hi ,

I am following this tutorial to deploy my first MDK app to Web

https://developers.sap.com/tutorials/cp-mobile-dev-kit-ms-setup.html

https://developers.sap.com/tutorials/cp-mobile-dev-kit-offline-app.html

But After deploying the app, I am getting underlying error

Failed to initialize application data service - Error: Error 0 (Unknown); GET https://webclient/sample_service_v2/

Looks Like it's an cross domain error from network trace ...

Please help me on this.