$rawState Error with RichEditor

public function mount($record): void
{
    parent::mount($record);

    /** @var Coach $model */
    $model = $this->record;

    // Convert HTML to Tiptap JSON for RichEditor
    if ($model->listingProfile && is_string($model->listingProfile->about_us) && ! empty($model->listingProfile->about_us)) {
        $editor = new Editor([
            'extensions' => [
                new StarterKit(),
            ],
        ]);

        $editor->setContent($model->listingProfile->about_us);

        // Setze die konvertierten Daten direkt im Form-State
        $this->data['listingProfile']['about_us'] = $editor->getDocument();
        dump($editor);
    }
}