Follow laravel upgrade guide

app/Models/Bookmark.php

@@ -7,6 +7,7 @@ namespace App\Models;
 use Eloquent;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Support\Carbon;
@@ -42,6 +43,8 @@ use Illuminate\Support\Carbon;
  */
 class Bookmark extends Model
 {
+    use HasFactory;
+
     /**
      * The attributes that are mass assignable.
      *

app/Models/Tag.php

@@ -7,6 +7,7 @@ namespace App\Models;
 use Eloquent;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Support\Carbon;
@@ -33,6 +34,8 @@ use Illuminate\Support\Carbon;
  */
 class Tag extends Model
 {
+    use HasFactory;
+
     /**
      * We shall set a blacklist of non-modifiable model attributes.
      *

app/Models/User.php

@@ -6,6 +6,7 @@ namespace App\Models;
 
 use Eloquent;
 use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Foundation\Auth\User as Authenticatable;
 use Illuminate\Notifications\DatabaseNotification;
 use Illuminate\Notifications\DatabaseNotificationCollection;
@@ -36,6 +37,7 @@ use Illuminate\Support\Carbon;
  */
 class User extends Authenticatable
 {
+    use HasFactory;
     use Notifiable;
 
     /**