ERROR Error: Uncaught (in promise), Cannot match any routes. URL Segment : <p>I have simple navigation in angular 6 app, </p>

<p>Here is HTML</p>

<pre><code>&lt;nav class="main-nav&gt;
&lt;ul class="main-nav__list " ng-sticky [addClass]="'main-sticky-link'" [ngClass]="ref.click === true? 'Navbar__ToggleShow' :''"&gt;
            &lt;li class="main-nav__item"&gt;
              &lt;a class="main-nav__link" routerLink="['/']" routerLinkActive="active"&gt;Home&lt;/a&gt;
            &lt;/li&gt;
            &lt;li class="main-nav__item"&gt; 
              &lt;a class="main-nav__link" routerLink="['/about']" routerLinkActive="active"&gt;About us&lt;/a&gt;
            &lt;/li&gt;

          &lt;/ul&gt;
&lt;/nav&gt;
</code></pre>

<p>here is app.routing module</p>

<pre><code>import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { RouterModule, Routes } from '@angular/router';
import { MainLayoutComponent } from './layout/main-layout/main-layout.component';
import { AboutComponent } from './components/about/about.component';
import { WhatwedoComponent } from './components/whatwedo/whatwedo.component';
import { FooterComponent } from './components/footer/footer.component';
import { ProjectsComponent } from './components/projects/projects.component';
const routes: Routes = [
  { path: 'about', component: AboutComponent },
  { path: 'what', component: WhatwedoComponent },
  { path: 'contacts', component: FooterComponent },
  { path: 'projects', component: ProjectsComponent},
];

@NgModule({
  imports: [
    CommonModule,
    RouterModule.forRoot(routes),
  ],
  declarations: []
})
export class AppRoutingModule { }
</code></pre>

<p>Here is app module</p>

<pre><code>import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { NgStickyDirective } from 'ng-sticky';
import { RouterModule } from '@angular/router';
import { AppComponent } from './app.component';
import { MainLayoutComponent } from './layout/main-layout/main-layout.component';
import { AppRoutingModule } from './/app-routing.module';
import { MainNavDirective } from './layout/main-nav.directive';
import { AboutComponent } from './components/about/about.component';
import { WhatwedoComponent } from './components/whatwedo/whatwedo.component';
import { FooterComponent } from './components/footer/footer.component';
import { WhyChooseUsComponent } from './components/why-choose-us/why-choose-us.component';
import { TeamComponent } from './components/team/team.component';
import { ProjectsComponent } from './components/projects/projects.component';
import { ClientsComponent } from './components/clients/clients.component';
import { HowItWorksComponent } from './components/how-it-works/how-it-works.component';
import { PartnersComponent } from './components/partners/partners.component';

@NgModule({
  declarations: [
    AppComponent,
    NgStickyDirective,
    MainLayoutComponent,
    MainNavDirective,
    AboutComponent,
    WhatwedoComponent,
    FooterComponent,
    WhyChooseUsComponent,
    TeamComponent,
    ProjectsComponent,
    ClientsComponent,
    HowItWorksComponent,
    PartnersComponent
  ],
  imports: [
    BrowserModule,
    RouterModule,
    AppRoutingModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }
</code></pre>

<p>when I run my app and click about us  i get the following error :</p>

<pre><code>core.js:1673 ERROR Error: Uncaught (in promise): Error: Cannot match any routes. URL Segment: '%5B'/about'%5D'
Error: Cannot match any routes. URL Segment: '%5B'/about'%5D'
    at
</code></pre>

<p>I have tried different combination to solve the issue but still not able to get rid of this error, </p>

<p>what am I doing wrong in my code? any help will be helpfull thanks</p>
