Service worker is not working

[BUHARIMOHAMEDISMAIL]

I have created new angular application and integrated pwa. Service worker is working and got the chrome application for that application once installation done over browser.
But service worker is not working in my existing application. I don't know the reason why it's not working for my application. Only difference between two application is version mismatch in angular core and angular common. In sample application angular core and common version is 6.0.3 but my application version is 6.0.0.
Please assist me to add pwa in my application

[hubFact]

I have the same issue now are you find the solution for this