Platform Events in LWC Salesforce

public class PlatformEventCtrl {
    
    public static void publishEvent(){
        Techdicer_Event__e event = new Techdicer_Event__e();
        event.message__c = 'test';
        event.recordId__c = '0016F000041zsTDQAY';
        event.status__c = 'Success';
        EventBus.publish(event);
    }
}

<template>
    <lightning-card title="Platform Event In LWC Techdicer" icon-name="standard:contact">
        <div class="slds-m-around_medium">
            <p>Status : {status}</p>
            <p>Message : {message}</p>
            <p>Record Id : {recordId}</p>
        </div>
    </lightning-card>
</template>

import { LightningElement, api, track } from 'lwc';
import { subscribe, unsubscribe, onError, setDebugFlag, isEmpEnabled } from 'lightning/empApi';
import { ShowToastEvent } from 'lightning/platformShowToastEvent';

export default class LWCPlatformEvent extends LightningElement {
    @track status;
    @track message;
    @track recordId;

    subscription = {};
    @api channelName = '/event/Techdicer_Event__e';

    connectedCallback() {
        // Register error listener     
        this.registerErrorListener();
        this.handleSubscribe();
    }

    // Handles subscribe button click
    handleSubscribe() {
        // Callback invoked whenever a new event message is received
        const self = this;
        const messageCallback = function (response) {
            console.log('New message received 1: ', JSON.stringify(response));
            console.log('New message received 2: ', response);
            var obj = JSON.parse(JSON.stringify(response));
            console.log(obj.data.payload);
            console.log(obj.data.payload.message__c);
            console.log(self.channelName);
            let objData = obj.data.payload;
            self.message = objData.message__c;
            self.status = objData.Status__c;
            self.recordId = objData.recordId__c;
            self.ShowToast('Techdicer Plaform Event', self.message, 'success', 'dismissable');
        };

        // Invoke subscribe method of empApi. Pass reference to messageCallback
        subscribe(this.channelName, -1, messageCallback).then(response => {
            // Response contains the subscription information on subscribe call
            console.log('Subscription request sent to: ', JSON.stringify(response.channel));
            this.subscription = response;
        });
    }

    //handle Error
    registerErrorListener() {
        onError(error => {
            console.log('Received error from server: ', JSON.stringify(error));
        });
    }

    ShowToast(title, message, variant, mode) {
        const evt = new ShowToastEvent({
            title: title,
            message: message,
            variant: variant,
            mode: mode
        });
        this.dispatchEvent(evt);
    }
}

<?xml version="1.0"?>
<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata">
	<apiVersion>51.0</apiVersion>
	<isExposed>true</isExposed>
	<targets>
		<target>lightning__HomePage</target>
	</targets>
	<targetConfigs>
        <targetConfig targets="lightning__HomePage">
            <property name="channelName" type="String" />
        </targetConfig>
    </targetConfigs>
</LightningComponentBundle>