GraphQL Exception

#GraphQL Exception: OperationException(linkException: ServerException(originalException: null, originalStackTrace:
null, parsedResponse: Response(data: null, errors: [GraphQLError(message: Field not defined for input object.,
locations: [ErrorLocation(line: 3, column: 3)], path: null, extensions: {field-name: type, argument:
Mutation/screenAppAdd.input, input-object-type: ScreenAppInput, input-object-fields: [developer, imageBase64,
name, platform, serviceId]})], context: Context({ResponseExtensions: Instance of 'ResponseExtensions'}), response
{errors: [{message: Field not defined for input object., locations: [{line: 3, column: 3}], extensions:
{field-name: type, argument: Mutation/screenAppAdd.input, input-object-type: ScreenAppInput, input-object-fields:
[developer, imageBase64, name, platform, serviceId]}}]})), graphqlErrors: [])