As we did with our types definitions, we need to merge all our resolvers using the @graphql-tools packages. You need to create the following file at /backend/src/graphql/resolvers/index.ts:
import path from 'path'
import { loadFilesSync } from '@graphql-tools/load-files'
import { mergeResolvers } from '@graphql-tools/merge'
const resolversArray = loadFilesSync(path.join(__dirname, './'))
const resolvers = mergeResolvers(resolversArray)
export default resolvers
This will combine all your resolvers into an array of resolvers.