{"errors":[{"message":"Must provide query string."}]} - express

Question

I want to upload image on by using graphql-upload package
This is my scheme file
const { GraphQLSchema, GraphQLObjectType, GraphQLBoolean } = require("graphql");
const { GraphQLUpload } = require("graphql-upload");
const schema = new GraphQLSchema({
mutation: new GraphQLObjectType({
name: "Mutation",
fields() {
return {
uploadImage: {
description: "Uploads an image.",
type: GraphQLBoolean,
args: {
image: {
description: "Image file.",
type: GraphQLUpload
}
},
async resolve(parent, { image }) {
const { filename, mimetype, createReadStream } = await image;
const stream = createReadStream();
// Promisify the stream and store the file, then…
return true;
}
}
};
}
})
});
This is my server file. When I run the file it gives error on the browser side. it showed: {"errors":[{"message":"Must provide query string."}]}.
const express = require("express");
const graphqlHTTP = require("express-graphql");
const { graphqlUploadExpress } = require("graphql-upload");
const schema = require("./schema");
express()
.use(
"/graphql",
graphqlUploadExpress({ maxFileSize: 10000000, maxFiles: 10 }),
graphqlHTTP({ schema })
)
.listen(3000);
**What am I doing wrong? **