After updating the kubernetes plugin(3743.v1fa_4c724c3b_7) on a long standing cluster, workers are no longer able to be created. No settings are changed or altered before or after plugin update.

failed to set up watcher on kubernetes io.fabric8.kubernetes.client.KubernetesClientException: No httpclient implementations found on the context classloader, please ensure your classpath includes an implementation jar at io.fabric8.kubernetes.client.utils.HttpClientUtils.getHttpClientFactory(HttpClientUtils.java:164) at io.fabric8.kubernetes.client.utils.HttpClientUtils.createHttpClient(HttpClientUtils.java:145) at io.fabric8.kubernetes.client.DefaultKubernetesClient.<init>(DefaultKubernetesClient.java:56) at org.csanchez.jenkins.plugins.kubernetes.KubernetesFactoryAdapter.createClient(KubernetesFactoryAdapter.java:147) at org.csanchez.jenkins.plugins.kubernetes.KubernetesClientProvider.createClient(KubernetesClientProvider.java:59) at org.csanchez.jenkins.plugins.kubernetes.KubernetesCloud.connect(KubernetesCloud.java:523) at org.csanchez.jenkins.plugins.kubernetes.pod.retention.Reaper.watchCloud(Reaper.java:219) at org.csanchez.jenkins.plugins.kubernetes.pod.retention.Reaper.preLaunch(Reaper.java:121) at hudson.slaves.SlaveComputer.lambda$_connect$0(SlaveComputer.java:296) at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:48) at jenkins.security.ImpersonatingExecutorService$2.call(ImpersonatingExecutorService.java:82) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:829)