Redis streams Data missing

I am using Redis with the Jedis client , I have two classes , a Producer one and a Consumer one .The data sent by the producer class over streams is not being recieved well by the Consumer class . It seems there is loss of data but I do not know the source or how to mitigate this problem .My Streams producer code snippet :

    Map<String, String> messageBody  = new HashMap<>();        for(String basekey : args){            Set<String> prices =  client.keys("RTSH:"+basekey +"*");            for(String price_key : prices){                messageBody.put("json_key", price_key);                client.xadd(STREAMS_KEY, StreamEntryID.NEW_ENTRY, messageBody);                System.out.println(messageBody);            }        }

My streams consumer snippet :

HostAndPort config = new HostAndPort(Protocol.DEFAULT_HOST, 6379);        PooledConnectionProvider provider = new PooledConnectionProvider(config);        UnifiedJedis client = new UnifiedJedis(provider);        XReadGroupParams xReadGroupParams = new XReadGroupParams();        xReadGroupParams.block(0);        xReadGroupParams.count(1);        xReadGroupParams.noAck();        try {            client.xgroupCreate(STREAMS_KEY, "RTSH_consumers",StreamEntryID.LAST_ENTRY,true);        }catch(Exception redisBusyException) {            System.out.println( String.format("\t Group '%s' already exists", "application_1"));        }        Map<String, StreamEntryID> stream =  new HashMap<>();        stream.put(STREAMS_KEY,StreamEntryID.UNRECEIVED_ENTRY);        while(true) {            List<Map.Entry<String, List<StreamEntry>>> messages = client.xreadGroup("RTSH_consumers", "consumer_RTSH", xReadGroupParams, stream);            if (!messages.isEmpty()) {                for (Map.Entry<String, List<StreamEntry>> entry : messages) {                    String key = entry.getKey();//key is the stream name                    List<StreamEntry> value = entry.getValue();                    for (StreamEntry StreamEntry : value) {                        String json_key = StreamEntry.getFields().get("json_key");                        Object prices =  client.jsonGet(json_key);                        System.out.println(prices);                        System.out.println("\n");                        client.xack(STREAMS_KEY, "RTSH_consumers", StreamEntry.getID());                    }                }            }        }

I tried fetching less data but the problem persists.