Adding components to URL, use this method instead of adding by yourself by appending string

gistfile1.swift

extension URL {
    
    @discardableResult
    func append(_ queryItem: String, value: String?) -> URL {
        
        guard var urlComponents = URLComponents(string:  absoluteString) else { return absoluteURL }
        
        // create array of existing query items
        var queryItems: [URLQueryItem] = urlComponents.queryItems ??  []
        
        // create query item if value is not nil
        guard let value = value else { return absoluteURL }
        let queryItem = URLQueryItem(name: queryItem, value: value)
        
        // append the new query item in the existing query items array
        queryItems.append(queryItem)
        
        // append updated query items array in the url component object
        urlComponents.queryItems = queryItems// queryItems?.append(item)
        
        // returns the url from new url components
        return urlComponents.url!
    }
}