NullPointerException when LDAP is enabled

com.couchbase.client.core.error.AuthenticationFailureException: Unexpected error during SASL auth {"status":"SUCCESS"}

        at com.couchbase.client.core.io.netty.kv.SaslAuthenticationHandler.failConnect(SaslAuthenticationHandler.java:431)

        at com.couchbase.client.core.io.netty.kv.SaslAuthenticationHandler.channelRead(SaslAuthenticationHandler.java:209)

 ...

Caused by: java.lang.NullPointerException

        at com.couchbase.client.core.io.netty.kv.SaslAuthenticationHandler.handleListMechsResponse(SaslAuthenticationHandler.java:262)

        at com.couchbase.client.core.io.netty.kv.SaslAuthenticationHandler.channelRead(SaslAuthenticationHandler.java:202)

        ... 29 more

import com.couchbase.client.java.*;

import com.couchbase.client.java.kv.*;

public class Demo2 {

    public static void main(String... args) {

        Cluster cluster = Cluster.connect("10.112.194.101", "Administrator", "password");

        Bucket bucket = cluster.bucket("travel-sample");

        Collection collection = bucket.defaultCollection();

        GetResult getResult = collection.get("airline_10");

        System.out.println("Found document: " + getResult);

    }

}

[vagrant@node1-cb650-centos7 ~]$ sudo -u couchbase /usr/sbin/testsaslauthd -u guest1 -p guest1password -f /var/run/saslauthd/mux

0: OK "Success."

import com.couchbase.client.java.Bucket;

import com.couchbase.client.java.Cluster;

import com.couchbase.client.java.CouchbaseCluster;

import com.couchbase.client.java.document.JsonDocument;

import java.util.concurrent.TimeUnit;

public class Demo {

    public static void main(String args[]){

        Cluster cluster = CouchbaseCluster.create("10.112.194.101" );

        cluster.authenticate("Administrator", "password");

        Bucket b1 = cluster.openBucket("travel-sample", 30, TimeUnit.SECONDS);

        JsonDocument document = b1.get("airline_10");

        System.out.print(document);

    }

}