Unable to filter event using web3j

[Satavim]

Trying filter the event with observable as below. But getting error:Invalid response received: okhttp3.internal.http.RealResponseBody@fcc04d9.

final Event event = new Event("Notify", 
                Arrays.<TypeReference<?>>asList(new TypeReference<Address>() {}, new TypeReference<Bytes32>() {}),
                Arrays.<TypeReference<?>>asList(new TypeReference<Bytes32>() {}));
		EthFilter filter = new EthFilter(DefaultBlockParameterName.EARLIEST,
		        DefaultBlockParameterName.LATEST, "1349f3e1b8d71effb47b840594ff27da7e603d17");
        filter.addSingleTopic(EventEncoder.encode(event));
        Admin web3j = Admin.build(new HttpService("ws://52.91.134.142:22000"));
       
			web3j.ethLogObservable(filter).subscribe(new Action1<Log>() {
		            @Override    
		            public void call(Log log) {
		                System.out.println("log.toString(): " +  log.toString());
		            }
})

What is the issue and how can I filter the event. ?

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[mithuns]

Any updates on this ?