Unable to connect to cluster hosted on a route53 domain

[punit-naik]

When I do :
(def ctx (k8s/make-context "https://api.x.x.x")) (<!! (k8s/list-namespaced-node ctx))
It gives me the following error:
{:success false, :error {:cause "unable to find valid certification path to requested target", :via [{:type javax.net.ssl.SSLHandshakeException, :at [sun.security.ssl.Handshaker checkThrown "Handshaker.java" 1529], :message "General SSLEngine problem"} {:type javax.net.ssl.SSLHandshakeException, :at [sun.security.ssl.Alerts getSSLException "Alerts.java" 192], :message "General SSLEngine problem"} {:type sun.security.validator.ValidatorException, :at [sun.security.validator.PKIXValidator doBuild "PKIXValidator.java" 397], :message "PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target"} {:type sun.security.provider.certpath.SunCertPathBuilderException, :at [sun.security.provider.certpath.SunCertPathBuilder build "SunCertPathBuilder.java" 141], :message "unable to find valid certification path to requested target"}], :trace [[sun.security.provider.certpath.SunCertPathBuilder build "SunCertPathBuilder.java" 141] [sun.security.provider.certpath.SunCertPathBuilder engineBuild "SunCertPathBuilder.java" 126] [java.security.cert.CertPathBuilder build "CertPathBuilder.java" 280] [sun.security.validator.PKIXValidator doBuild "PKIXValidator.java" 392] [sun.security.validator.PKIXValidator engineValidate "PKIXValidator.java" 302] [sun.security.validator.Validator validate "Validator.java" 260] [sun.security.ssl.X509TrustManagerImpl validate "X509TrustManagerImpl.java" 324] [sun.security.ssl.X509TrustManagerImpl checkTrusted "X509TrustManagerImpl.java" 281] [sun.security.ssl.X509TrustManagerImpl checkServerTrusted "X509TrustManagerImpl.java" 136] [sun.security.ssl.ClientHandshaker serverCertificate "ClientHandshaker.java" 1601] [sun.security.ssl.ClientHandshaker processMessage "ClientHandshaker.java" 216] [sun.security.ssl.Handshaker processLoop "Handshaker.java" 1052] [sun.security.ssl.Handshaker$1 run "Handshaker.java" 992] [sun.security.ssl.Handshaker$1 run "Handshaker.java" 989] [java.security.AccessController doPrivileged "AccessController.java" -2] [sun.security.ssl.Handshaker$DelegatedTask run "Handshaker.java" 1467] [org.httpkit.client.HttpsRequest doHandshake "HttpsRequest.java" 89] [org.httpkit.client.HttpClient doRead "HttpClient.java" 177] [org.httpkit.client.HttpClient run "HttpClient.java" 474] [java.lang.Thread run "Thread.java" 748]]}}

I am unable to connect to the cluster.