I am trying just to hit a GET API using java but I am getting this error everytime

This error is happenning at restclient.get() line

Help here

I have provided all the class

Restclient class ->

public class Restclient {
    // Hit get method
    @SuppressWarnings("deprecation")
    public void get(String url) throws IOException, ParseException, URISyntaxException {

        HttpGet httpget = new HttpGet(url);

        try (CloseableHttpClient httpClient = HttpClients.createDefault()) {

            CloseableHttpResponse response = httpClient.execute(httpget);

            System.out.println("Response status: " + response.getReasonPhrase());

            int statuscode = response.getCode();
            System.out.println("Status code : " + statuscode);

            String responseString = EntityUtils.toString(response.getEntity(), "UTF-8");

            JsonObject responseJson = JsonParser.parseString(responseString).getAsJsonObject();
            System.out.println("Response from API : " + responseJson);

            Header[] headerarray = response.getHeaders();
            Map<String, String> allheader = new HashMap<>();
            for (Header header : headerarray) {
                allheader.put(header.getName(), header.getValue());
            }
            System.out.println(allheader);
        }
    }
}

Baseclass ->
public class BaseClass {

public Properties prop;

public BaseClass() {
    try {
        prop = new Properties();
        FileInputStream ip = new FileInputStream("app/src/main/java/com/mypackage/config/config.properties");
        prop.load(ip);
    } catch (IOException e) {
        e.printStackTrace();
    }
}

}

Testclass ->
public class GetAPITest extends BaseClass {

BaseClass base;
String endpoint;
String apiurl;
String url;
Restclient restClient;

@BeforeMethod
public void setup() {
    base = new BaseClass();
    apiurl = prop.getProperty("url");
    endpoint = prop.getProperty("endpoint");
    url = apiurl + endpoint;
}

@Test
public void getAPITest() throws ParseException, IOException, URISyntaxException {
    restClient = new Restclient();
    restClient.get(url);
}

}

config.properties file ->

url = https://reqres.in/
endpoint = api/users?page=1