title: Laravel Method notify does not exist
body: <p>I am trying to notify user if a new form is inserted to database, but I get this error:</p>
  
  <pre><code>BadMethodCallException in Macroable.php line 74: Method notify does not exist.
  </code></pre>
  
  <p>This is the notification class</p>
  
  <pre><code>&lt;?php
  
  namespace App\Notifications\Admin;
  
  use Illuminate\Bus\Queueable;
  use Illuminate\Notifications\Notification;
  use Illuminate\Contracts\Queue\ShouldQueue;
  use Illuminate\Notifications\Messages\MailMessage;
  
  use App\Models\Admin\Forms\Prescriptions;
  
  class PrescriptionNotification extends Notification
  {
      use Queueable;
  
      public $Prescription;
  
      /**
       * Create a new notification instance.
       *
       * @return void
       */
      public function __construct(Prescriptions $Prescription)
      {
          $this-&gt;Prescriptions = $Prescription;
      }
  
      /**
       * Get the notification's delivery channels.
       *
       * @param  mixed  $notifiable
       * @return array
       */
      public function via($notifiable)
      {
          return ['database'];
      }
  
      /**
       * Get the mail representation of the notification.
       *
       * @param  mixed  $notifiable
       * @return \Illuminate\Notifications\Messages\MailMessage
       */
      public function toMail($notifiable)
      {
          $url = url('/admin/prescriptions/edit/'.$this-&gt;Prescriptions-&gt;id);
  
          return (new MailMessage)
                      -&gt;line('New form')
                      -&gt;action('View', $url)
                      -&gt;line('');
      }
  
      /**
       * Get the array representation of the notification.
       *
       * @param  mixed  $notifiable
       * @return array
       */
      public function toArray($notifiable)
      {
          return [
              'test' =&gt; 'test'
          ];
      }
  }
  </code></pre>
  
  <p>And in my controller I am doing this:</p>
  
  <pre><code> $users = App\User::all()-&gt;where('role', 3);
   //trigger email notification
   $Prescription = Prescriptions::first();
   $users-&gt;notify(new PrescriptionNotification($Prescription));
  </code></pre>
  
  <p>Been following <a href="https://laracasts.com/series/whats-new-in-laravel-5-3/episodes/10?autoplay=true" rel="nofollow noreferrer">This</a> tutorial, but still to no avail. I have Notifiable in the user model. What else can be done? I am losing my mind what causes this error.</p>
  
  <p>As requested my User class:</p>
  
  <pre><code>&lt;?php
  
  namespace App;
  
  use Illuminate\Notifications\Notifiable;
  use Illuminate\Foundation\Auth\User as Authenticatable;
  
  class User extends Authenticatable
  {
      use Notifiable;
  
      /**
       * The attributes that are mass assignable.
       *
       * @var array
       */
      protected $fillable = [
          'name', 'email', 'password',
      ];
  
      /**
       * The attributes that should be hidden for arrays.
       *
       * @var array
       */
      protected $hidden = [
          'password', 'remember_token',
      ];
  
      //is admin
      public function isAdmin()
      {
          return $this-&gt;role; // this looks for an admin column in your users table
      }
  
      //relationship with prescription forms
      public function confirmations()
      {
          return $this-&gt;hasMany('App\Models\Admin\Forms\Prescription_confirmations', 'physician_id');
      }
  
      //relationship with prescriptions forms
      public function prescriptions()
      {
          return $this-&gt;hasMany('App\Models\Admin\Forms\Prescriptions', 'physician_id');
      }
  }
  </code></pre>