ScrollID is coming as null

I am successfully able to get ScrollID but when i set the scrollID on client.scroll(scrollValueFromsearchResponse) i get error


var searchScrollResponse=elasticsearchClient.scroll(x->x.scrollId(scrollId),Map.class);

error i get is as below

failed to parse setting [SearchScrollRequest.keepAlive] with value [FGluY2x1ZGVfY29udGV4dF91dWlkDXF1ZXJ5QW5kRmV0Y2gBFkJISTNWaVowU3ptdnpzclZmVEMxb1EAAAAAAAAAZhZGeEp6VU1MTVRlbXY5OUIyNEZGOXRB] as a time value: unit is missing or unrecognized