带Angular 8的bootstrap 4:导航栏工作，但不会在单击时自动关闭(在导航栏内部或外部)

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">Logo</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="collapse navbar-collapse" id="navbarNav" [autoClose]="false">
    <ul class="navbar-nav">
      <li class="nav-item">
        <a class="nav-link" href="#">Home</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">About</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Services</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Contact</a>
      </li>
    </ul>
  </div>
</nav>

<button class="navbar-toggler" type="button" (click)="toggleNavbar()">
  <span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" [ngClass]="{ 'show': isNavbarOpen }">
  <!-- 导航栏内容 -->
</div>

export class NavbarComponent {
  isNavbarOpen: boolean = false;

  toggleNavbar() {
    this.isNavbarOpen = !this.isNavbarOpen;
  }
}