Getting "JSONObject [" loginInfo "] not found" error while trying to log in using the rest client Jira sdk

Question

Getting "JSONObject [" loginInfo "] not found" error while trying to log in using the rest client Jira sdk

We use the sdk client JDK client (jira-rest-java-client-api-2.0.0-m31.jar and jira-rest-java-client-core-2.0.0-m31.jar) to log in and receive data from Jira. Until Friday morning (May 12, 2017), we were able to enter Jira using the mentioned Jira sdk (we used this sdk from the last 1.5-2 years without any problems). But for some reason, it started giving below error / exception when we try to login using the same sdk:

    RestClientException{statusCode=Optional.absent(), errorCollections=[]}
    at com.atlassian.jira.rest.client.internal.async.DelegatingPromise.claim(DelegatingPromise.java:47)
    at com.jira.JiraLogin.main(JiraLogin.java:21)
Caused by: RestClientException{statusCode=Optional.absent(), errorCollections=[]}
    at com.atlassian.jira.rest.client.internal.async.AbstractAsynchronousRestClient$3.apply(AbstractAsynchronousRestClient.java:181)
    at com.atlassian.jira.rest.client.internal.async.AbstractAsynchronousRestClient$3.apply(AbstractAsynchronousRestClient.java:175)
    at com.atlassian.httpclient.api.ResponsePromiseMapFunction.apply(ResponsePromiseMapFunction.java:62)
    at com.atlassian.httpclient.api.ResponsePromiseMapFunction.apply(ResponsePromiseMapFunction.java:12)
    at com.atlassian.util.concurrent.Promises$Of$3.apply(Promises.java:268)
    at com.atlassian.util.concurrent.Promises$2.onSuccess(Promises.java:158)
    at com.google.common.util.concurrent.Futures$6.run(Futures.java:1319)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:457)
    at com.google.common.util.concurrent.ExecutionList.executeListener(ExecutionList.java:156)
    at com.google.common.util.concurrent.ExecutionList.execute(ExecutionList.java:145)
    at com.google.common.util.concurrent.AbstractFuture.set(AbstractFuture.java:185)
    at com.google.common.util.concurrent.SettableFuture.set(SettableFuture.java:53)
    at com.atlassian.util.concurrent.Promises$Of$3.apply(Promises.java:268)
    at com.atlassian.util.concurrent.Promises$2.onSuccess(Promises.java:158)
    at com.google.common.util.concurrent.Futures$6.run(Futures.java:1319)
    at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:457)
    at com.google.common.util.concurrent.ExecutionList.executeListener(ExecutionList.java:156)
    at com.google.common.util.concurrent.ExecutionList.execute(ExecutionList.java:145)
    at com.google.common.util.concurrent.AbstractFuture.set(AbstractFuture.java:185)
    at com.google.common.util.concurrent.SettableFuture.set(SettableFuture.java:53)
    at com.atlassian.httpclient.apache.httpcomponents.SettableFuturePromiseHttpPromiseAsyncClient$1$1.run(SettableFuturePromiseHttpPromiseAsyncClient.java:46)
    at com.atlassian.httpclient.apache.httpcomponents.SettableFuturePromiseHttpPromiseAsyncClient$ThreadLocalDelegateRunnable$1.run(SettableFuturePromiseHttpPromiseAsyncClient.java:197)
    at com.atlassian.httpclient.apache.httpcomponents.SettableFuturePromiseHttpPromiseAsyncClient.runInContext(SettableFuturePromiseHttpPromiseAsyncClient.java:90)
    at com.atlassian.httpclient.apache.httpcomponents.SettableFuturePromiseHttpPromiseAsyncClient$ThreadLocalDelegateRunnable.run(SettableFuturePromiseHttpPromiseAsyncClient.java:192)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: org.codehaus.jettison.json.JSONException: JSONObject["loginInfo"] not found.
    at org.codehaus.jettison.json.JSONObject.get(JSONObject.java:360)
    at org.codehaus.jettison.json.JSONObject.getJSONObject(JSONObject.java:454)
    at com.atlassian.jira.rest.client.internal.json.SessionJsonParser.parse(SessionJsonParser.java:33)
    at com.atlassian.jira.rest.client.internal.json.SessionJsonParser.parse(SessionJsonParser.java:26)
    at com.atlassian.jira.rest.client.internal.async.AbstractAsynchronousRestClient$1.handle(AbstractAsynchronousRestClient.java:138)
    at com.atlassian.jira.rest.client.internal.async.AbstractAsynchronousRestClient$3.apply(AbstractAsynchronousRestClient.java:179)
    ... 26 more

Below is a sample code (Java code) that we use to log in to Jira using sdk:

package com.jira;

import java.net.URI;

import com.atlassian.jira.rest.client.api.JiraRestClient;
import com.atlassian.jira.rest.client.api.domain.Session;
import com.atlassian.jira.rest.client.internal.async.AsynchronousJiraRestClientFactory;

public class JiraLogin {
    private static final AsynchronousJiraRestClientFactory FACTORY = new AsynchronousJiraRestClientFactory();

    public static void main(String args[]){
        String url = "https://mycompany.atlassian.net";
        String username = "hjethava";
        String email = "hjethava@xyzcompany.com";
        String password = "xxxxx";

        try {
            URI serverURI = new URI(url);
            JiraRestClient jrc = FACTORY.createWithBasicHttpAuthentication(serverURI, email, password);
            Session s = jrc.getSessionClient().getCurrentSession().claim();
            username = s.getUsername();
            System.out.println("User '" + username + "' logged in successfully.");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}