Getting java.lang.RuntimeException: java.util.concurrent.TimeoutException error while creating primary index

Couchbase Server
1

This is the line of code, I am using :-

@Grab(‘com.couchbase.client:java-client:2.2.7’)

//2.2.6
import java.util.concurrent.CountDownLatch;

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 com.couchbase.client.java.document.json.JsonObject;
import com.couchbase.client.java.CouchbaseCluster
import com.couchbase.client.java.query.N1qlQuery;
import com.couchbase.client.java.query.N1qlQueryResult;
import com.couchbase.client.java.query.N1qlQueryRow;
import com.couchbase.client.java.query.SimpleN1qlQuery;
import com.couchbase.client.java.env.CouchbaseEnvironment;
import com.couchbase.client.java.env.DefaultCouchbaseEnvironment;

CouchbaseEnvironment env = DefaultCouchbaseEnvironment.builder().connectTimeout(20000).build();
def cluster = CouchbaseCluster.create(env, ip_Address);
def bucket = cluster.openBucket(bucket_name, bucket_password);
log.info “Connection done”

String queryString = "CREATE PRIMARY INDEX primInd ON demo"

SimpleN1qlQuery simpleQuery = N1qlQuery.simple(queryString);
N1qlQueryResult resultSet = bucket.query(simpleQuery);

log.info “Primary index created”

It gives above error at this line - N1qlQueryResult resultSet = bucket.query(simpleQuery);

Could you please help to replicate the issue?