pusher class not found when install tcpdf and maatwebsite/excel via composer

Question

when installing pusher via composer it works !

composer require pusher/pusher-php-server

but when installing elibyy/tcpdf-laravel and maatwebsite/excel via composer >> pdf and excel works but pusher not !!

error >> Class Pusher not found !!

composer.json

"require": {
    "php": ">=5.6.4",
    "laravel/framework": "5.3.*",
    "caouecs/laravel-lang": "~3.0",
    "laravelcollective/html": "^5.3.0",
    "yajra/laravel-datatables-oracle": "6.25.0",
    "laravel/socialite": "2.0.21",
    "musonza/chat": "^1.0",
    "guzzlehttp/guzzle": "^6.2",
    "pusher/pusher-php-server": "^3.0",
    "illuminate/support": "5.3.*",
    "tecnickcom/tcpdf": "6.2.12",
    "elibyy/tcpdf-laravel": "5.3.0",
    "maatwebsite/excel": "2.1.*"
},

Answer 1

By any change have you upgraded Pusher from 2.x version to 3.0.0? They have introduced namespace so try:

new \Pusher\Pusher($auth_key, $secret, $app_id);

or import it:

<?php

use Pusher\Pusher;
// ...

$pusher = new Pusher($auth_key, $secret, $app_id);