Zomato-API behaving weirdly different api calls

Question

const zomato = require("zomato-api");

const client = zomato({
userKey: "my-user-key",
});

// fetching one data and chaining another fetch

client.getGeocode({lat: lat-value, lon: lon-value}).then(result => {
console.log(result);
// now using the data fetched we get the restaurant details
return client.getRestaurant({res_id: result.popularity.nearby_res[0]})
}).then(res_data => {
console.log(res_data);
});

So, the idea was to extract the nearby_res array from the geocode API's result and then use one of the elements (each element is an id) as the parameter for the next API call.

client.getRestaurant({res_id: result.popularity.nearby_res[0]})

Now, this should originally return all the details about the restaurant with the id specified.

When invoked independently with an id, the getRestaurant() function returns the result in the expected format. But when it is chained like this, the result is basically the same as the result of the first API call ( geocode API).

Am I doing anything wrong here? or is the Zomato API reluctant to do this kind of chaining.

Please help.