[SalesForce] Lightning Web Component use Publish-Subscribe event in Community cloud

How can we use publish-subscriber event pattern in Community Cloud using lightining web component.

I have drag-and-drop two Lightining Web Component(LWC) in a community page. On click on first component I have to show some output in second component.

Same components are working in Lightning Page(Like: Account detail page) but not in Community page.
I used pubsub module from the lwc-receipe for this.

Code which fires the Event:

import { LightningElement, api, wire } from 'lwc';
import {CurrentPageReference} from 'lightning/navigation';
import { fireEvent } from 'c/pubsub'
export default class LwcAccounttile extends LightningElement {
    @api name;
    @wire(CurrentPageReference) pageRef;

    tileClick() {
        fireEvent(this.pageRef, 'inputChangeEvent', this.name);
    }

}

Code which subscribe the events

import { LightningElement,track,api,wire } from 'lwc';
import { CurrentPageReference} from 'lightning/navigation';
import { registerListener, unregisterAllListeners, fireEvent } from 'c/pubsub';

export default class Lwc_AccountEventListner extends LightningElement {
    @track ac;
    @track inpVal;
    @wire(CurrentPageReference) pageRef;

    connectedCallback() {
      // subscribe to inputChangeEvent event
      registerListener('inputChangeEvent', this.handleChange, this);
    }
  disconnectedCallback() {
    // unsubscribe from inputChangeEvent event
    unregisterAllListeners(this);
  }
  handleChange(inpVal) {
    this.inpVal = inpVal;
  }    
}

During debugging I found that this.pageRef is returning undefined in the commnunity while in lightning page it is returning value.