web.php

<?php
//fb-bot-tutorial/routes/web.php

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/

Route::get('/', function () {
    return view('welcome');
});

//add this new endpoint
Route::get('/webhook', 'WebhookController@getWebhook');
Route::post('/webhook', 'WebhookController@postWebhook');