I have installed ionic frame work and created a project called sudo ionic start everything is good so far i have choosed ionic with a side bar project and following the tutorial over here https://www.sitepoint.com/ionic-4-angular-build-app/ And i have done a couple of reserch but all the documents are actually assuming that the src/app/app-routing.module.ts File is already there any help is really appriciatable i have checked there official documentation in at that also they are assuming this file is already there.
My Ionic version
CLI PRO 4.0.0