io.fabric8.kubernetes.client.KubernetesClientException: An error has occurred.

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io.fabric8.kubernetes.client.KubernetesClientException: An error has occurred.
at java.net.InetAddress.getAllByName0(InetAddress.java:1280)
at java.net.InetAddress.getAllByName(InetAddress.java:1192)
at java.net.InetAddress.getAllByName(InetAddress.java:1126)
at com.squareup.okhttp.Dns$1.lookup(Dns.java:39)
at com.squareup.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:175)
at com.squareup.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:141)
at com.squareup.okhttp.internal.http.RouteSelector.next(RouteSelector.java:83)
at com.squareup.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:174)
at com.squareup.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
at com.squareup.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
at com.squareup.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:281)
at com.squareup.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
at com.squareup.okhttp.Call.getResponse(Call.java:286)
at io.fabric8.kubernetes.client.utils.HttpClientUtils$3.intercept(HttpClientUtils.java:110)
at com.squareup.okhttp.Call$ApplicationInterceptorChain.proceed(Call.java:232)
at com.squareup.okhttp.Call.getResponseWithInterceptorChain(Call.java:205)
at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:210)
at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:205)
at io.fabric8.kubernetes.client.dsl.base.BaseOperation.handleGet(BaseOperation.java:510)
at io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:118)
at io.fabric8.elasticsearch.cloud.kubernetes.KubernetesAPIServiceImpl.endpoints(KubernetesAPIServiceImpl.java:35)
at io.fabric8.elasticsearch.discovery.kubernetes.KubernetesUnicastHostsProvider.readNodes(KubernetesUnicastHostsProvider.java:112)
at io.fabric8.elasticsearch.discovery.kubernetes.KubernetesUnicastHostsProvider.lambda$buildDynamicNodes$0(KubernetesUnicastHostsProvider.java:80)
at io.fabric8.elasticsearch.discovery.kubernetes.KubernetesUnicastHostsProvider.buildDynamicNodes(KubernetesUnicastHostsProvider.java:79)
at org.elasticsearch.discovery.zen.ping.unicast.UnicastZenPing.sendPings(UnicastZenPing.java:335)
at org.elasticsearch.discovery.zen.ping.unicast.UnicastZenPing$2$1.doRun(UnicastZenPing.java:253)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

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