CluPilotCloud/app/Models/MaintenanceNotification.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class MaintenanceNotification extends Model
{
    protected $fillable = ['maintenance_window_id', 'customer_id', 'event', 'email', 'sent_at'];

    protected function casts(): array
    {
        return ['sent_at' => 'datetime'];
    }
}