AWS Amplify GraphQL query returns null instead of items array

Question

I'm trying to query items from a DynamoDB table using AWS Amplify API, running on React.js.
I have a table named Codes, from which I'm trying to query the items using the following code:

var codesData = await API.graphql(graphqlOperation(queries.listCodes, {
  filter: {
    id: {
      eq: id
    },
    num: {
      eq: 1
    }
  }
}));
console.log(codesData);

As you can see, I want to receive all items that have id value as their "id" attribute, and 1 as their "num" attribute.
When I'm printing the codesData to the console, I get the following response:

Object
    data:
        listCodes: null

So I don't even have the items attribute.

I've tried to search the web for something about that, but couldn't find anything.

Answer 1

In the amplify docs they say that you must create new items after you have added the @searchable directive to your model:

See GraphQL Transform

and there

Note: Support for adding the @searchable directive does not yet provide automatic indexing for any existing data to Elasticsearch.

Create your items anew after you have added @searchable and those items will be displayed.