@jemasu6 ooh wait a second I think I see it now: you are opening the bucket manager and not actually opening a Bucket. Just do double check can you try opening a bucket? I think that will work, the BucketManager is using different facilities underneath than the actual bucket.
I think you are running into https://issues.couchbase.com/browse/JCBC-999 which is a known issue, I just didn’t get around fixing yet.
To verify, can you try cluster.openBucket with your setup and see if that works? If that works and the BucketManager doesn’t I think you are running into JCBC-999.
@slodyczka.stanislaw is your code the same or are you running into something different?