Lazy Loading BrowserModule has already been loaded

Import BrowserModule, BrowserAnimationsModule, HttpModule or HttpClientModule only once, preferably in your root module.

I also got the same error and finally, after little bit struggle, I was able to fix it.

Import these mentioned modules only once(in app-module only):

BrowserModule, BrowserAnimationsModule, LazyLoadImageModule (if using it), CarouselModule (if using it), InfiniteScrollModule (if using it), HttpModule ( if using it)