Error when using the jira-rest-java-client

[Arundathi_G_Vardhan]

When calling _restClient.getProjectClient().getProject(<project_key>).claim(); the exception/s below are thrown.

RestClientException{statusCode=Optional.absent(), errorCollections=[]}
at com.atlassian.jira.rest.client.internal.async.DelegatingPromise.claim(DelegatingPromise.java:45)
at com.test.service.JiraClient.getIssueTypeId(JiraClient.java:195)
at com.test.service.TestClient.main(TestClient.java:24)
Caused by: RestClientException{statusCode=Optional.absent(), errorCollections=[]}
at com.atlassian.jira.rest.client.internal.async.AbstractAsynchronousRestClient$3.apply(AbstractAsynchronousRestClient.java:191)
at com.atlassian.jira.rest.client.internal.async.AbstractAsynchronousRestClient$3.apply(AbstractAsynchronousRestClient.java:185)
at com.atlassian.httpclient.api.ResponsePromiseMapFunction.apply(ResponsePromiseMapFunction.java:57)
at com.atlassian.httpclient.api.ResponsePromiseMapFunction.apply(ResponsePromiseMapFunction.java:10)
at io.atlassian.util.concurrent.Promises$OfStage.lambda$fold$4(Promises.java:332)
at io.atlassian.util.concurrent.Promises$OfStage$$Lambda$63.00000000D4D2B100.apply(Unknown Source)
at io.atlassian.util.concurrent.Promises.lambda$biFunction$7(Promises.java:422)
at io.atlassian.util.concurrent.Promises$$Lambda$71.00000000D4D2CD90.apply(Unknown Source)
at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:930)
at java.base/java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:907)
at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)
at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2144)
at com.atlassian.httpclient.apache.httpcomponents.SettableFuturePromiseHttpPromiseAsyncClient$1.lambda$doCompleted$0(SettableFuturePromiseHttpPromiseAsyncClient.java:37)
at com.atlassian.httpclient.apache.httpcomponents.SettableFuturePromiseHttpPromiseAsyncClient$1$$Lambda$85.000000004820E8B0.run(Unknown Source)
at com.atlassian.httpclient.apache.httpcomponents.SettableFuturePromiseHttpPromiseAsyncClient.runInContext(SettableFuturePromiseHttpPromiseAsyncClient.java:61)
at com.atlassian.httpclient.apache.httpcomponents.SettableFuturePromiseHttpPromiseAsyncClient$ThreadLocalDelegateRunnable.run(SettableFuturePromiseHttpPromiseAsyncClient.java:129)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:831)
Caused by: org.codehaus.jettison.json.JSONException: JSONObject["name"] not found.
at org.codehaus.jettison.json.JSONObject.get(JSONObject.java:360)
at org.codehaus.jettison.json.JSONObject.getString(JSONObject.java:487)
at com.atlassian.jira.rest.client.internal.json.JsonParseUtil.parseBasicUser(JsonParseUtil.java:192)
at com.atlassian.jira.rest.client.internal.json.ProjectJsonParser.parse(ProjectJsonParser.java:56)
at com.atlassian.jira.rest.client.internal.json.ProjectJsonParser.parse(ProjectJsonParser.java:36)
at com.atlassian.jira.rest.client.internal.async.AbstractAsynchronousRestClient$1.handle(AbstractAsynchronousRestClient.java:148)
at com.atlassian.jira.rest.client.internal.async.AbstractAsynchronousRestClient$3.apply(AbstractAsynchronousRestClient.java:189)
... 18 more

I'm using the following gradle library version compile 'com.atlassian.jira:jira-rest-java-client-core:5.2.1'. Can someone tell me how to solve this/ give me workaround?