Laravel shows error displaying notification data - laravel

Question

this is my code
in the app.blade.php, i added this code to the navbar. The count method is working fine. I just can't display the notification data value.
<a class="nav-link" data-toggle="dropdown" href="#">
<i class="fa fa-comments">Business Alerts</i>
<span class="badge badge-danger navbar-badge">{{ count(auth()->user()->unreadNotifications) }}</span>
</a>
<ul class="dropdown-menu dropdown-menu-lg dropdown-menu-right">
#foreach (auth()->user()->unreadNotifications as $notification)
<li class="dropdown-divider"></li>
<a href="#" class="dropdown-item">
{{--<i class="fas fa-info mr-2 green"></i>{{ $notification->type }}--}}
#include('layouts.partials.notification.'.snake_case(class_basename( $notification->type )))
{{ $notification->data['user']['email'] }}//it works only if i remove this line
</a>
#endforeach
<div class="dropdown-divider"></div>
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</ul>
</li>
#endforeach
In the browser i'm getting this
Undefined index: alert (View: C:\laragon\www\test\resources\views\layouts\partials\notification\test.blade.php)
when i try
dd( $notification->data['alert']['id'] )
it display 2
this is the controller code
public function store(Request $request)
{
$user = User::find($request['user_id']);
$alert = ProductAlert::findOrFail($request['alert_id']);
$alert->alert_qty -= $request['alert_qty'];
$alert->save();
$user->notify(new StockEpuise(json_decode($alert)));
return invest::create([
'alert_id' => $request['alert_id'],
'user_id' => $request['user_id'],
'alert_type' => $request['alert_type'],
'alert_qty' => $request['alert_qty'],
]);
}```
I don't know what is the problem