How I can bypass "angular-in-memory-web-api" for a specific url
you can set passThruUnknownUrl to forward to real backend for un-matching endpoints
e.g.,
InMemoryWebApiModule.forRoot(InMemoryDataService, { passThruUnknownUrl: true}),
You can try by removing InMemoryWebApiModule.forRoot(InMemoryDataService) from your app.module. If you have done so already, showing some code would be helpful.
Also, consider using Postman to verify your new service