Decoding Failure and IndexOutOfBoundException Subdocument LookupIn Reactive

Hi Team,

I am trying to get the data I need from Couchbase from multiple documents using reactive api and lookupin.

It works fine till 17 arguments. It is giving me below exception after 17 variables.

Eception com.couchbase.client.core.error.DecodingFailureException: java.lang.IndexOutOfBoundsException: readerIndex(6) + length(1701999215) exceeds writerIndex(61): AbstractPooledDerivedByteBuf$PooledNonRetainedSlicedByteBuf(ridx: 6, widx: 61, cap: 61/61, unwrapped: PooledUnsafeDirectByteBuf(ridx: 88, widx: 88, cap: 16384))

Example : I have showed with 2 args
In the below specs list, I add arguments

List<LookupInSpec> specs = new ArrayList<>();

	public void getMessages() {
		List<JsonObject> jsonList = Flux.fromIterable(documentIds)
				.flatMap(documentId -> getDocumentFieldsAsync(documentId, LookupInOptions.lookupInOptions()))
				.onErrorContinue((e, o) -> {

		System.out.println("jsonList  " + jsonList);


	public Mono<LookupInResult> getDocumentFieldsAsync(String id, LookupInOptions options) {
		Mono<LookupInResult> result = null;
		result = this.cbBucket.defaultCollection().lookupIn(id, specs, options)
				.doOnSuccess(p -> printMessage("Data fetched successfully")).doOnError(p -> {
					String msg = "Eception ";
					printMessage(msg + p);
		return result;

	public void printMessage(String msg) {

Is there a limitation in couchbase or a mistake from my end.

If it is mistake , kindly let me know how to modify this code?