The library does not add GTM script to the DOM about angular-google-tag-manager HOT 3 OPEN

import { Component, OnInit } from '@angular/core';
import { GoogleTagManagerService } from 'angular-google-tag-manager';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss'],
})
export class AppComponent implements OnInit {
  constructor(
    private readonly gtmService: GoogleTagManagerService,
  ) { }

  ngOnInit() {
    this.gtmService.addGtmToDom();
  }
}

import { GoogleTagManagerModule } from 'angular-google-tag-manager';

imports: [
    ...
    GoogleTagManagerModule.forRoot({
      id: YOUR_GTM_ID,
    })
]