Try your search with a different keyword or use * as a wildcard.
using Microsoft.AspNetCore.Mvc;
using Nop.Services.Directory;
using Nop.Web.Controllers;
namespace Nop.Plugin.Widgets.What3words.Controllers;
[AutoValidateAntiforgeryToken]
public class What3wordsCountryController : BasePublicController
{
    #region Fields
    protected readonly ICountryService _countryService;
    #endregion
    #region Ctor
    public What3wordsCountryController(ICountryService countryService)
    {
        _countryService = countryService;
    }
    #endregion
    #region Methods
    public async Task GetAlpha2byCountryName(int countryId)
    {
        var result = (await _countryService.GetCountryByIdAsync(countryId))?.TwoLetterIsoCode;
        return Json(result);
    }
    #endregion
}