Що не так з моїм кутовим кодом? Я отримую:
Cannot read property 'remove' of undefined at BrowserDomAdapter.removeClass ...
HTML
<ol class="breadcrumb">
<li *ngClass="{active: step==='step1'}" (click)="step='step1; '">Step1</li>
<li *ngClass="{active: step==='step2'}" (click)="step='step2'">Step2</li>
<li *ngClass="{active: step==='step3'}" (click)="step='step3'">Step3</li>
</ol>