API Fetch has no return

iOS Programming: The Big Nerd Ranch Guide (6th Edi 20. Web Services
1

I’m trying to work through Chapter 20 and I’m stuck when fetching. The fetching status is ok, but it doesn’t return any image. The console prints: {“photos”:{“page”:1,“pages”:0,“perpage”:100,“total”:0,“photo”:[]},“stat”:“ok”}

My FlickrAPI.swift code is below:

import Foundation

enum Method: String {
    case interestingPhotos = "flickr.interestingness.getList"
}

struct FlickrAPI {
    private static let baseURLString = "https://api.flickr.com/services/rest"
    private static let apiKey = "a6d819499131071f158fd740860a5a88"
    
    static var interestingPhotosURL: URL {
        return flickrURL(method: .interestingPhotos, parameters: ["extras":"url_h,date_taken"])
    }
    
    private static func flickrURL(method: Method,
                                  parameters: [String:String]?) -> URL {
        var components = URLComponents(string: baseURLString)!
        
        var queryItems = [URLQueryItem]()
        
        let baseParams = [
            "method": method.rawValue,
            "format": "json",
            "nojsoncallback": "1",
            "api_key": apiKey]
        
        for(key, value) in baseParams {
            let item = URLQueryItem(name: key, value: value)
            queryItems.append(item)
        }
        
        if let additionalParams = parameters {
            for(key, value) in additionalParams {
                let item = URLQueryItem(name: key, value: value)
                queryItems.append(item)
            }
            components.queryItems = queryItems
        }
        return components.url!
    }
}

I have a feeling this might be a problem with the API itself. Can anyone help me please? Thanks in advance.

2

component.queryItems = queryItems should be out of the if let scope like that :

    if let additionalParams = parameters{
        for (key, value) in additionalParams{
            let item = URLQueryItem(name: key, value: value)
            queryItems.append(item)
        }
    }
  -->>  components.queryItems = queryItems
    return components.url!