Model refusing to insert data

Can you share an image of your UserModel's $allowedFields? As well as the var_dump of the $data from $this->request->getPost()?
Then what is the error when you do this?

PHP Code:

$userModel = new UserModel();
$data = $this->request->getPost();

if (! $userModel->insert($data)) {
    var_dump($userModel->errors());
}