how to resolve the zone already loaded error in angular4?

Question

Im trying to load my angular build from a typescript package using (dist/index.html). Its loading fine, but when im going back and again trying to load the same, its showing the below errors.

VM5485:1 Uncaught Error: Zone already loaded. at new d (:1:211206)

VM5457:1 Uncaught Error: Zone.js has detected that ZoneAwarePromise (window|global).Promise has been overwritten.

I tried: removing the zone.js from polyfills.ts and adding "angularfire2": "5.0.0-rc.4".

But no luck. Can someone please help

Answer 1

Adding zone.js: 0.9.0 in the package.json and run npm install. The issue will get resolved.