Rss and Json don't render author field

[vedmant]

I added author field to items:

ideas.forEach((idea) => {
    feed.addItem({
      title: idea.title,
      id: idea.short_id,
      link: `${urlBase}/${idea.short_id}/${idea.slug}`,
      content: idea.content,
      date: new Date(idea.idea_date),
      author: idea.user.name,
    })
  })

But in the rss elements are like this:

         <item>
            <title><![CDATA[New board]]></title>
            <link>https://www.bla.com/nkkmzt/new-board</link>
            <guid>nkkmzt</guid>
            <pubDate>Sat, 23 Jul 2022 16:22:21 GMT</pubDate>
            <content:encoded><![CDATA[<p>Test</p>]]></content:encoded>
        </item>

And for JSON:

{
id: "i43be6",
content_html: "<p>Test</p>",
url: "https://www.dailyidea.com/i43be6/an-idea",
title: "An idea",
date_modified: "2022-07-23T16:34:06.000Z",
author: { }
}

I validatedidea.user.name is present and are strings.