Ok, so apparently the @alpha version is only going to work well with Gatsby v3 (not released yet), so going back to 0.0.12
The reason I tried the alpha version is that I have flickering GraphQL errors when using version 0.0.12: one time it fails, telling me there’s no url field on any image relation I have. To continue, I have to adjust all graphql statements to use publicURL instead. However, the next build will fail, claiming that there’s no publicURL field on any image relation I have, and I have to change all graphql statements back to using url.
I’m pretty sure this is related to how Gatsby uses both server side rendering and client side rendering and there’s somehting going wrong in between. I am however no expert whatsoever in this domain…