AWS GraphQL: Variable 'input' has coerced Null value for NonNull type 'Input!'

Question

I'm using ReactJS and aws-amplify to execute graphql operations.

CODE:

import {    API,    graphqlOperation } from 'aws-amplify';  import { UpdateInput } from './mutations.js';  // Call mutation const input = { /* some values */ }; API.graphql(graphqlOperation(UpdateInput, input)).then(...); 

GraphQL mutation definition:

export const UpdateInput = `mutation UpdateInput($input: Input!) {    updateInput(input: $input) {       id,        name    }    }` 

GraphQL Schema:

input Input {    id: ID!    name: String }  type Mutation {    updateInput(input: Input!): String } 

However, I get an error:

[Log] Variable 'input' has coerced Null value for NonNull type 'Input!'

Using AWS console my mutation works and input is NonNull (using a debugger)

Any ideas what's causing the error?

Answer 1

The key was input in the updateInput mutation.

updateInput(input: Input!): String          // ^^^^^ input key 

Thus, need to specify correct key in the passed variable.

const variables = {   input: someData, // key is "input" based on the mutation above };  API.graphql(graphqlOperation(UpdateInput, variables)).then(...);