SWIFT UI - HTTP POST method sending as GET method

SWIFT UI - HTTP POST method sending as GET method Where as curl post works for the same URL curl --header "Content-Type: application/json"
--request POST
--data '{"username":"xyz","password":"xyz"}'
http://localhost:5555/post_HTTP_test // <NSHTTPURLResponse: 0x60000030a100> { URL: http://localhost:5555/post_HTTP_test } { Status Code: 404, Headers { //

code-block
func HTTP_POST_2_Test() {
    let full_path: String = "http://localhost:5555/post_HTTP_test"
    var decodedAnswer: String = ""
    if let url = URL(string: full_path) {
        
        var request = URLRequest(url: url)
        print("HTTP_POST_2_Test:IN")
        
        let jsonString = """
        {
          "fld_1": "John",
          "Fld_2": 30
        }
        """

        let jsonData = Data(jsonString.utf8) // Convert string to Data
        
        request.httpMethod = "POST"
        request.httpBody = jsonData
        
        do {
            let task = URLSession.shared.dataTask(with: url) { data, response, error in
                guard let data = data, let response = response, error == nil else{
                    
                    print("Something wrong?: error: \(error?.localizedDescription ?? "unkown error")")
                    return
                }
                
                print(response)
                
                decodedAnswer = String(decoding: data, as: UTF8.self)
                print("Response:",decodedAnswer)
                
            }
            
            task.resume()
        }
    }
}