title: GraphQL Expected Iterable, but did not find one for field while using find
body: <p>Currently I am using Apollo/GraphQL/Node.js/Sequelize to build my backend server, and my server code looked like below, in there I can use req.user to get the current login user</p>
  
  <pre><code>app.use(
    '/graphql',
    bodyParser.json(),
    graphqlExpress(req =&gt; ({
      schema,
      context: {
        models,
        user: req.user,
      },
    })),
  );
  </code></pre>
  
  <p>Now I have two models User and Recipe, and the association rule is Recipe belongs to User, so in the Recipe schema I can use the UserId to know which user create this schema, the Recipe schema is</p>
  
  <pre><code>type Recipe {
    id: Int!
    authorName: String!
    authorFbPage: String @virtual
    perfumeName: String!
    message: String
    UserId: Int
  }
  
  type Query {
    allRecipe: [Recipe]
    meRecipe: [Recipe]
    AvailableWatchRecipe: [Recipe]
  }
  </code></pre>
  
  <p>My problem is in the meRecipe part, this Query supposed to be able to show the recipes created by login user, the resolver code is </p>
  
  <pre><code>meRecipe: async (parent, args, { models, user }) =&gt; {
        if (user) {
          console.log(user.id);
          console.log(user.username);
          return models.Recipe.find({ where: { UserId: user.id } })
            .then((result) =&gt; { return result });
        }
  
        return null;
      }, 
  </code></pre>
  
  <p>You can see I also use the console.log to check whether I can get the current user information, it actually can, so I am really confused why when I run this Query in the GraphQL server, it always shows <code>"message": "Expected Iterable, but did not find one for field Query.meRecipe</code>.
  I have checked these resources:
  <a href="https://github.com/brysgo/graphql-bookshelf/issues/10" rel="nofollow noreferrer">https://github.com/brysgo/graphql-bookshelf/issues/10</a>
  and
  <a href="https://stackoverflow.com/questions/46513476/graphql-expected-iterable-but-did-not-find-one-for-field-xxx-yyy">GraphQL Expected Iterable, but did not find one for field xxx.yyy</a>
  but none of them fit my case, can anyone give me some advice, thanks!</p>