我们使用 Jira Rest 客户端 sdk（jira-rest-java-client-api-2.0.0-m31.jar 和 jira-rest-java-client-core-2.0.0-m31.jar）进行登录并从中获取数据吉拉。直到星期五早上（2017 年 5 月 12 日），我们能够使用提到的 Jira sdk 登录 Jira（我们从过去 1.5-2 年以来一直在使用这个 sdk，没有任何问题）。但由于某种原因，当我们尝试使用相同的 sdk 登录时，它开始给出以下错误/异常：
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 …