Why I getting this error: POST body missing. Did you forget use body-parser middleware?

I am trying to upload a file to the server using apollo-server-fastify. I didn’t use the fastify-multipart or similar dependencies because createHandler has its own.
I keep getting the following error on my graphql file upload mutation.
Simple mutations works fine, what could be wrong, maybe I missed something?

This is my problematic boilerplate https://github.com/malmo-east/apollo-fastify.git