gatsby-plugin-sitemap NoURLProtocolError: Protocol is required

[pawelotto]

While building the site with gatsby-plugin-sitemap I get the
NoURLProtocolError: Protocol is required
error.

Why?

[wardpeet]

Could you give us some more information about your configuration and maybe just push your code online so we can have a look at it?

Please look at https://github.com/gatsbyjs/gatsby/blob/master/.github/ISSUE_TEMPLATE/bug_report.md to tell us more about this issue.

[pawelotto]

I've discovered that this error only occurs when I use a custom query and when I have no siteUrl defined in the siteMetadata. I've been using siteRoot instead of siteUrl and when I add the siteUrl everything works OK.

[wardpeet]

Oh yeah siteUrl is mandatory. It's probably a good idea to throw an error when this happens instead of showing a weird error.

[ryandrew14]

I will dig into this over the weekend!