Encountering difficulty directing component in Angular 9: Error Type: Unable to access 'outlet' property of undefined

I am facing an issue with routing in my dashboard module. Specifically, I am trying to navigate to the WhatsAppConversationComponent using routes defined in the DashboardRoutes, but it is not working as expected.

Within my Dashboard module, I have declared various components including WhatsAppConversationComponent:

@NgModule({
    imports: [
        CommonModule,
        RouterModule.forChild(DashboardRoutes),
        FormsModule,
        MdModule,
        MaterialModule
    ],
    declarations: [
        DashboardComponent,
        SurveyComponent,
        QuestionnaireComponent,
        SurveyReportComponent,
        WhatsAppConversationComponent
    ]
})

export class DashboardModule { }

The DashboardRoutes array contains routes for different components including WhatsAppConversationComponent:

export const DashboardRoutes: Routes = [
  {
    path: '',
    children: [{
      path: 'dashboard',
      component: DashboardComponent
    }, {
      path: 'questionnaire',
      component: QuestionnaireComponent
    }, {
      path: 'survey',
      component: SurveyComponent
    }, , {
      path: 'whatsappconversation',
      component: WhatsAppConversationComponent
    }, {
      path: 'survey-report',
      component: SurveyReportComponent
    }]
  }
];

However, when I attempt to navigate to /whatsappconversation route, the following error occurs:

core.js:3838 ERROR Error: Uncaught (in promise): TypeError: Cannot read property 'outlet' of undefined
TypeError: Cannot read property 'outlet' of undefined
    at getOutlet (router.js:2822)
    ...

This error prevents the WhatsAppConversationComponent from loading on the UI.

Answer №1

There seems to be an extra comma in your survey route configuration.

 {
  path: 'survey',
  component: SurveyComponent
}, , {
  path: 'whatsappconversation',
  component: WhatsAppConversationComponent
}, {

While the extra comma is incorrect, it is not the cause of the error you are experiencing. Angular interprets this as a Componentless Route. To resolve this, refer to: https://angular.io/api/router/Route. In order to specify a primary outlet component for the merged route, you need to include outlet: 'aux' in the Componentless Route definition.

To prevent this issue, ensure that you define a root component before adding child routes. This will prevent Angular from attempting to merge the child routes incorrectly.

Answer №2

When configuring your DashboardRoutes route, it is important to note that the root route must have a defined option, either a component or a redirectTo.

export const DashboardRoutes: Routes = [
  {
    path: '',
   // make sure to include a component or redirectTo here

Answer №3

Make sure to only use one comma in the code snippet

, {
      path: 'whatsappconversation',
      component: WhatsAppConversationComponent
    },

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