npmpostgresql95% confidence\u2191 44

GraphQLError: Query root type must be provided

Full error message

I'm using NestJS, TypeORM and GraphQL for my backend API. I'm getting the following error:

GraphQLError [Object]: Query root type must be provided.
      at SchemaValidationContext.reportError (/home/wise-introvert/Container/Projects/the-notebook/app/server/node_modules/graphql/type/validate.js:88:19)
      at validateRootTypes (/home/wise-introvert/Container/Projects/the-notebook/app/server/node_modules/graphql/type/validate.js:107:13)
      at validateSchema (/home/wise-introvert/Container/Projects/the-notebook/app/server/node_modules/graphql/type/validate.js:52:3)
      at graphqlImpl (/home/wise-introvert/Container/Projects/the-notebook/app/server/node_modules/graphql/graphql.js:79:62)
      at /home/wise-introvert/Container/Projects/the-notebook/app/server/node_modules/graphql/graphql.js:28:59
      at new Promise (<anonymous>)
      at Object.graphql (/home/wise-introvert/Container/Projects/the-notebook/app/server/node_modules/graphql/graphql.js:26:10)
      at GraphQLSchemaFactory.<anonymous> (/home/wise-introvert/Container/Projects/the-notebook/app/server/node_modules/@nestjs/graphql/dist/schema-builder/graphql-schema.factory.js:49:52)
      at Generator.next (<anonymous>)
      at /home/wise-introvert/Container/Projects/the-notebook/app/server/node_modules/tslib/tslib.js:114:75

This is what my file structure and code looks like:

Can someone please help me. My repo: https://github.com/wise-introvert/nestjs-graphql-api.git

Solutionsource: stackoverflow \u2197

All servers running with GraphQL must have at least one @Query() to be considered a valid GraphQL server. Without it, the apollo-server package will throw an exception and the server will fail to start. This can be as simple as @Resolver() export class FooResolver { @Query(() => String) sayHello(): string { return 'Hello World!'; } }

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