datasurvey/src/main/webapp/app/shared/alert/alert-error.component.html

<div class="alerts" role="alert">
  <div *ngFor="let alert of alerts" [ngClass]="setClasses(alert)">
    <ngb-alert *ngIf="alert.message" [type]="alert.type" (closed)="close(alert)">
      <pre [innerHTML]="alert.message"></pre>
    </ngb-alert>
  </div>
</div>