Actualizando entre versiones de CI4 (upgrade

ci4/app/Models/UserModel.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Models;
+
+use CodeIgniter\Shield\Models\UserModel as ShieldUserModel;
+
+class UserModel extends ShieldUserModel
+{
+    protected function initialize(): void
+    {
+        parent::initialize();
+
+        $this->allowedFields = [
+            ...$this->allowedFields,
+
+            // 'first_name',
+        ];
+    }
+}