Gatsby createTypes don't create localFile using File

[kalwas123]

I have a problem to run Gatsby when there is a field in graphql that is empty (in cms sometimes the field will be empty sometimes not). I managed to solve this problem by adding in gatsby-node.js via createTypes the missing content. Unfortunately just as for the text using the string type works fine so for the photo using the File type subfield localFile is not created. I need the localFile to appear even if there is no photo, the same way as photo is added. Does anyone have an idea how to solve this. Thanks a lot in advance for your help.

gatsby-node.js

`exports.sourceNodes = ({ actions }) => {

const { createTypes } = actions
const typeDefs = ` type StrapiPageEstimateRealizations implements Node {
Title: String
Description: String
Img: File
}

createTypes(typeDefs) }

graphql when the photo field is empty

graphql when a picture is added in cms