Выберите базу данных с помощью laravel 5.5

Я пытаюсь запросить базу данных и получить информацию о пользователе. Я использую систему adminlte, но когда я запускаю представление, оно возвращает переменную ошибку.

HomeController.php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use App\Http\Controllers\Controller;

class HomeController extends Controller
{
    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('auth');
    }

    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {

        $users = DB::select('select * from users');

        return view('vendor.adminlte.page', ['users' => $users]);
    }

}

Page.blade.php

@extends('adminlte::master')

@section('adminlte_css')
    <link rel = "stylesheet"
          href = "{{ asset('vendor/adminlte/dist/css/skins/skin-' . config('adminlte.skin', 'blue') . '.min.css')}} ">
    @stack('css')
    @yield('css')
@stop

@section('body_class', 'skin-' . config('adminlte.skin', 'blue') . ' sidebar-mini ' . (config('adminlte.layout') ? [
    'boxed' => 'layout-boxed',
    'fixed' => 'fixed',
    'top-nav' => 'layout-top-nav'
][config('adminlte.layout')] : '') . (config('adminlte.collapse_sidebar') ? ' sidebar-collapse ' : ''))

@section('body')
    <div class = "wrapper">

<div class = "wrapper" style = "height: auto; min-height: 100%;">

  <header class = "main-header">
    <!-- Logo -->
    <a href = "/home" class = "logo">
      <!-- mini logo for sidebar mini 50x50 pixels -->
      <span class = "logo-mini"><b>U</b></span>
      <!-- logo for regular state and mobile devices -->
      <span class = "logo-lg"><b>UNIDAS</b></span>
    </a>
    <!-- Header Navbar: style can be found in header.less -->
    <nav class = "navbar navbar-static-top">
      <!-- Sidebar toggle button-->
      <a href = "#" class = "sidebar-toggle" data-toggle = "push-menu" role = "button">
        <span class = "sr-only">Toggle navigation</span>
        <span class = "icon-bar"></span>
        <span class = "icon-bar"></span>
        <span class = "icon-bar"></span>
      </a>

      <div class = "navbar-custom-menu">
        <ul class = "nav navbar-nav">
          <!-- Messages: style can be found in dropdown.less-->
          <li class = "dropdown messages-menu">
            <a href = "#" class = "dropdown-toggle" data-toggle = "dropdown">
              <i class = "fa fa-envelope-o"></i>
              <span class = "label label-success">4</span>
            </a>
            <ul class = "dropdown-menu">
              <li class = "header">Você tem 4 mensagens</li>
              <li>
                <!-- inner menu: contains the actual data -->
                <ul class = "menu">
                  <li><!-- start message -->
                    <a href = "#">
                      <div class = "pull-left">
                        <img src = "images/usuarios/richardnicson.jpg" class = "img-circle" alt = "User Image">
                      </div>
                      <h4>
                        Informática
                        <small><i class = "fa fa-clock-o"></i> 5 minutos</small>
                      </h4>
                      <p>Está conseguindo concluir?</p>
                    </a>
                  </li>
                  <!-- end message -->
                  <li>
                    <a href = "#">
                      <div class = "pull-left">
                        <img src = "images/usuarios/richardnicson.jpg" class = "img-circle" alt = "User Image">
                      </div>
                      <h4>
                        Financeiro
                        <small><i class = "fa fa-clock-o"></i> 2 horas</small>
                      </h4>
                      <p>Está conseguindo concluir?</p>
                    </a>
                  </li>
                  <li>
                    <a href = "#">
                      <div class = "pull-left">
                        <img src = "images/usuarios/richardnicson.jpg" class = "img-circle" alt = "User Image">
                      </div>
                      <h4>
                        Contabilidade
                        <small><i class = "fa fa-clock-o"></i> Hoje</small>
                      </h4>
                      <p>Está conseguindo concluir?</p>
                    </a>
                  </li>
                  <li>
                    <a href = "#">
                      <div class = "pull-left">
                        <img src = "images/usuarios/richardnicson.jpg" class = "img-circle" alt = "User Image">
                      </div>
                      <h4>
                        Institucional
                        <small><i class = "fa fa-clock-o"></i> Ontem</small>
                      </h4>
                      <p>Está conseguindo concluir?</p>
                    </a>
                  </li>
                  <li>
                    <a href = "#">
                      <div class = "pull-left">
                        <img src = "images/usuarios/richardnicson.jpg" class = "img-circle" alt = "User Image">
                      </div>
                      <h4>
                        Gerência
                        <small><i class = "fa fa-clock-o"></i> 2 Dias</small>
                      </h4>
                      <p>Está conseguindo concluir?</p>
                    </a>
                  </li>
                </ul>
              </li>
              <li class = "footer"><a href = "#">Ler todas Mensagens</a></li>
            </ul>
          </li>
          <!-- Notifications: style can be found in dropdown.less -->
          <li class = "dropdown notifications-menu">
            <a href = "#" class = "dropdown-toggle" data-toggle = "dropdown">
              <i class = "fa fa-bell-o"></i>
              <span class = "label label-warning">10</span>
            </a>
            <ul class = "dropdown-menu">
              <li class = "header">Você tem 10 notificações</li>
              <li>
                <!-- inner menu: contains the actual data -->
                <ul class = "menu">
                  <li>
                    <a href = "#">
                      <i class = "fa fa-users text-aqua"></i>Não Imprimir Colorido
                    </a>
                  </li>
                  <li>
                    <a href = "#">
                      <i class = "fa fa-warning text-yellow"></i>Nova Reunião Redir
                    </a>
                  </li>
                  <li>
                    <a href = "#">
                      <i class = "fa fa-users text-red"></i>Aviso Copa
                    </a>
                  </li>

                  <li>
                    <a href = "#">
                      <i class = "fa fa-shopping-cart text-green"></i>Data Congresso Internacional
                    </a>
                  </li>
                  <li>
                    <a href = "#">
                      <i class = "fa fa-user text-red"></i> Banco de Horas
                    </a>
                  </li>
                </ul>
              </li>
              <li class = "footer"><a href = "#">Ver todas Notificações</a></li>
            </ul>
          </li>
          <!-- Tasks: style can be found in dropdown.less -->
          <li class = "dropdown tasks-menu">
            <a href = "#" class = "dropdown-toggle" data-toggle = "dropdown">
              <i class = "fa fa-flag-o"></i>
              <span class = "label label-danger">9</span>
            </a>
            <ul class = "dropdown-menu">
              <li class = "header">Você tem 9 tarefas</li>
              <li>
                <!-- inner menu: contains the actual data -->
                <ul class = "menu">
                  <li><!-- Task item -->
                    <a href = "#">
                      <h3>
                        Desenvolver Intranet
                        <small class = "pull-right">20%</small>
                      </h3>
                      <div class = "progress xs">
                        <div class = "progress-bar progress-bar-aqua" style = "width: 20%" role = "progressbar" aria-valuenow = "20" aria-valuemin = "0" aria-valuemax = "100">
                          <span class = "sr-only">20% Complete</span>
                        </div>
                      </div>
                    </a>
                  </li>
                  <!-- end task item -->
                  <li><!-- Task item -->
                    <a href = "#">
                      <h3>
                        Desenvolver novo layout
                        <small class = "pull-right">40%</small>
                      </h3>
                      <div class = "progress xs">
                        <div class = "progress-bar progress-bar-green" style = "width: 40%" role = "progressbar" aria-valuenow = "20" aria-valuemin = "0" aria-valuemax = "100">
                          <span class = "sr-only">40% Complete</span>
                        </div>
                      </div>
                    </a>
                  </li>
                  <!-- end task item -->
                  <li><!-- Task item -->
                    <a href = "#">
                      <h3>
                        Desenvolver novo Administrador
                        <small class = "pull-right">60%</small>
                      </h3>
                      <div class = "progress xs">
                        <div class = "progress-bar progress-bar-red" style = "width: 60%" role = "progressbar" aria-valuenow = "20" aria-valuemin = "0" aria-valuemax = "100">
                          <span class = "sr-only">60% Complete</span>
                        </div>
                      </div>
                    </a>
                  </li>
                  <!-- end task item -->
                  <li><!-- Task item -->
                    <a href = "#">
                      <h3>
                        Unificar superitêndencias
                        <small class = "pull-right">80%</small>
                      </h3>
                      <div class = "progress xs">
                        <div class = "progress-bar progress-bar-yellow" style = "width: 80%" role = "progressbar" aria-valuenow = "20" aria-valuemin = "0" aria-valuemax = "100">
                          <span class = "sr-only">80% Complete</span>
                        </div>
                      </div>
                    </a>
                  </li>
                  <!-- end task item -->
                </ul>
              </li>
              <li class = "footer">
                <a href = "#">Ver todas Tarefas</a>
              </li>
            </ul>
          </li>
          <!-- User Account: style can be found in dropdown.less -->
          <li class = "dropdown user user-menu">
            <a href = "#" class = "dropdown-toggle" data-toggle = "dropdown" aria-expanded = "false">
              <img src = "images/usuarios/richardnicson.jpg" class = "user-image" alt = "User Image">
              <span class = "hidden-xs">Richard Nicson</span>
            </a>
            <ul class = "dropdown-menu">
              <!-- User image -->
              <li class = "user-header">
                <img src = "images/usuarios/richardnicson.jpg" class = "img-circle" alt = "User Image">

                <p>
                  Richard Nicson Costa de Lima - Desenvolvedor Web
                  <small>Membro desde Agosto. 2018</small>
                </p>
              </li>

              <!-- Menu Footer-->
              <li class = "user-footer">
                <div class = "pull-left">
                  <a href = "/meus-dados" class = "btn btn-default btn-flat">Perfil</a>
                </div>
                <div class = "pull-right">
                  <a href = "#" class = "btn btn-default btn-flat" onclick = "event.preventDefault(); document.getElementById('logout-form').submit();">
                                    <i class = "fa fa-fw fa-power-off"></i> Sair
                                </a>
                                <form id = "logout-form" action = "http://intranet.unidas.org.br/logout" method = "POST" style = "display: none;">
                                                                        <input type = "hidden" name = "_token" value = "jmubQRfJenzcLKmbpvyjeMCVeafWedS5IPC36tmk">
                                </form>
                </div>

                              </li>

            </ul>
          </li>
        </ul>
      </div>
    </nav>
  </header>
  @if (config('adminlte.layout') != 'top-nav')
  <!-- Left side column. contains the logo and sidebar -->
  <aside class = "main-sidebar">
    <!-- sidebar: style can be found in sidebar.less -->
    <section class = "sidebar">
      <!-- Sidebar user panel -->
      <div class = "user-panel">
        <div class = "pull-left image">
          <img src = "images/usuarios/richardnicson.jpg" class = "img-circle" alt = "User Image">
        </div>
        <div class = "pull-left info">
          <p>Richard Nicson</p>
          <a href = "#"><i class = "fa fa-circle text-success"></i> Online</a>
        </div>
      </div>
      <!-- search form -->
      <form action = "#" method = "get" class = "sidebar-form">
        <div class = "input-group">
          <input type = "text" name = "q" class = "form-control" placeholder = "Pesquisar...">
              <span class = "input-group-btn">
                <button type = "submit" name = "search" id = "search-btn" class = "btn btn-flat"><i class = "fa fa-search"></i>
                </button>
              </span>
        </div>
      </form>
      <!-- /.search form -->
      <!-- sidebar menu: : style can be found in sidebar.less -->
      <ul class = "sidebar-menu tree" data-widget = "tree">
        @each('adminlte::partials.menu-item', $adminlte->menu(), 'item')
       </ul>
    </section>
    <!-- /.sidebar -->
  </aside>
@endif
  <!-- Content Wrapper. Contains page content -->
  <div class = "content-wrapper" style = "min-height: 1265px;">
    @if (config('adminlte.layout') == 'top-nav')

            <div class = "container">
            @endif

            <!-- Content Header (Page header) -->
            <section class = "content-header">
                @yield('content_header')
            </section>

            <!-- Main content -->
            <section class = "content">

                @yield('content')

            </section>
            <!-- /.content -->
            @if (config('adminlte.layout') == 'top-nav')
            </div>
            <!-- /.container -->
            @endif
        </div>
        <!-- /.content-wrapper -->

    </div>
    <!-- ./wrapper -->
@stop

@section('adminlte_js')
    <script src = "{{ asset('vendor/adminlte/dist/js/adminlte.min.js') }}"></script>
    @stack('js')
    @yield('js')
@stop

Ошибка:

ErrorException (E_ERROR) Undefined variable: adminlte (View: /home/unidas/intranet/resources/views/vendor/adminlte/page.blade.php)