fix

src/app/app.component.ts

@@ -3,6 +3,7 @@ import { Component } from '@angular/core';
 import { Platform } from '@ionic/angular';
 import { SplashScreen } from '@ionic-native/splash-screen/ngx';
 import { StatusBar } from '@ionic-native/status-bar/ngx';
+import { Router } from '@angular/router';
 
 @Component({
   selector: 'app-root',
@@ -13,7 +14,8 @@ export class AppComponent {
   constructor(
     private platform: Platform,
     private splashScreen: SplashScreen,
-    private statusBar: StatusBar
+    private statusBar: StatusBar,
+    private router: Router
   ) {
     this.initializeApp();
   }
@@ -22,6 +24,9 @@ export class AppComponent {
     this.platform.ready().then(() => {
       this.statusBar.styleDefault();
       this.splashScreen.hide();
+
+      this.router.navigateByUrl('start');
+
     });
   }
 }

src/app/start/start.page.html

@@ -5,5 +5,9 @@
 </ion-header>
 
 <ion-content>
-
+  <ion-button color="primary">Primary</ion-button>
+  <ion-button color="secondary">Secondary</ion-button>
+  <ion-button color="tertiary">Tertiary</ion-button>
+  <ion-button color="success">Success</ion-button>
+  <ion-button color="warning">Warning</ion-button>
 </ion-content>