I'm trying build a new application using Laravel 13.5.0 with Livewire starter kit. I've successfully added a new field, "phone", to my users table and created a user profile with the field filled in. I also have the saved value displaying correctly on my Profile Settings screen. But when I try to modify it and save, I get the Exception: "No property found for validation: phone".

The error is coming from a call to

$this->validate($this->profileRules($user->id))

My profileRules function looks like this:

protected function profileRules(?int $userId = null): array
    {
        return [
            'name' => $this->nameRules(),
            'email' => $this->emailRules($userId),
            'pnone' => $this->phoneRules(),
        ];
    }

with phoneRules defined as

protected function phoneRules(): array
    {
        return ['required', 'string', 'max:25'];
    }

What am I missing?