ngx-permissions error with directive *ngxPermissionsOnly

I have a problem with the directive of the library ngx-permissions. These are the versions of my angular's dependency:

    "@angular/animations": "^5.0.3",
    "@angular/common": "^5.0.3",
    "@angular/compiler": "^5.0.3",
    "@angular/core": "^5.0.3",
    "@angular/forms": "^5.0.3",
    "@angular/http": "^5.0.3",
    "@angular/platform-browser": "^5.0.3",
    "@angular/platform-browser-dynamic": "^5.0.3",
    "@angular/router": "^5.0.3",

And I am following this example.

I am using the version of module:

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

import { AppComponent } from './app.component';

import { NgxPermissionsModule } from 'ngx-permissions';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,

    // Specify your library as an import
     NgxPermissionsModule.forRoot()
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

I can use the services without problem, but I have an error only with the directive. The error is the next:

Can't bind to 'ngxPermissionsOnly' since it isn't a known property of 'div'. ("
    </div>
            </div>
                <div [ERROR ->]*ngxPermissionsOnly="['ADMIN', 'GUEST']" class="m-portlet__head-tools">
                    <ul class="nav nav-pil"): ng:///DashboardModule/DashboardComponent.html@35:10
Property binding ngxPermissionsOnly not used by any directive on an embedded template. Make sure that the property name is spelled correctly and all directives are listed in the "@NgModule.declarations". ("
                    </div>
                </div>
                [ERROR ->]<div *ngxPermissionsOnly="['ADMIN', 'GUEST']" class="m-portlet__head-tools">
                    <ul class="nav na"): ng:///DashboardModule/DashboardComponent.html@35:5

I had the same issue and my fix was to add NgxPermissionsModule for child module.

NgxPermissionsModule.forChild()