ErrorException Undefined variable $employee - laravel

Question

Using Database Notification I have stored notification in the notification table.
But now I want to display the notification in the blade template.
I have faced an undefined error.
Controller
$data=Employee::create([
'first_name'=>$request->input('first_name'),
'last_name'=>$request->input('last_name'),
'username'=>$request->input('username'),
'email'=>$request->input('email'),
'password'=>$request->input('password'),
'confirm_password'=>$request->input('confirm_password'),
]);
$admin=Employee::find(1);
$admin->notify(new NotifyAdmin($data));
NotifyAdmin class
<?php
namespace App\Notifications;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Notifications\Messages\MailMessage;
use Illuminate\Notifications\Notification;
use Illuminate\Notifications\Notifiable;
use App\Models\Employee;
class NotifyAdmin extends Notification implements ShouldQueue
{
use Queueable, Notifiable;
private $val;
public function __construct(Employee $employee)
{
$this->val=$employee;
}
public function via($notifiable)
{
return ['database'];
}
public function toArray($notifiable)
{
return [
'username'=> $this->val->username
];
}
}
After doing this, the notification is stored in the notification table.
Now I want to display this notification
<div class="media-body">
#foreach($employee->notifications as $row)
<p class="noti-details"><span class="noti-title">Admin</span> added new doctor <span class="noti-title">{{$row->data['username']}}</span></p>
<p class="noti-time"><span class="notification-time">4 mins ago</span></p>
#endforeach
</div>

Answer 1

this is my controller
<?php
namespace App\Http\Controllers;
use App\Models\Employee;
use Illuminate\Http\Request;
use App\helpers\helper;
use App\Notifications\NotifyAdmin;
class EmployeeController extends Controller
{
public function InsertEmployees(Request $request)
{
$data=Employee::create([
'first_name'=>$request->input('first_name'),
'last_name'=>$request->input('last_name'),
'username'=>$request->input('username'),
'email'=>$request->input('email'),
'password'=>$request->input('password'),
'confirm_password'=>$request->input('confirm_password'),
'phone'=>$request->input('phone'),
'nid_number'=>$request->input('nid_number'),
'status'=>$request->input('status'),
'roles'=>$request->input('roles'),
'join_date'=>$request->input('join_date'),
]);
$admin=Employee::find(1);
$admin->notify(new NotifyAdmin($data));