called unstable_createNodeManifest() for node id warnings

[djavco]

warn Plugin gatsby-source-sanity called unstable_createNodeManifest() for node id "-5ee014cc-920c-5f60-8c0f-6b958134aefc" with a manifest id of
"singletonHomepage-2022-06-03T15:40:28.000Z" but Gatsby couldn't find a page for this node.
      If you want a manifest to be created for this node (for previews or other purposes), ensure that a page was created (and that a ownerNodeId is
added to createPage() if you're not using the Filesystem Route API).

I am getting these warnings for each item of content in my studio - what is causing them?
Gatsby ^3.14.6
gatsby-source-sanity "^7.4.2"

I see this is a repeat of #144

[taitsengstock]

@djavco did you manage to find a solution for this?