Error during accessing the GetSearchResult Service using RIDC

Hello Experts,

I'm using the RIDC API To access the UCM WebServices in Clustered environment so to connect with UCM server using the below code but very Frequently I'm getting the Error Message in UI like

Unable to retrieve search results. Unable to execute service method 'getSearchResults'.

	public IdcClient getUCMConnection(String idcConnectionURL) throws IdcClientException {
	IdcClientManager clientManager = new IdcClientManager();
	IdcClient idcClient= clientManager.createClient(idcConnectionURL);
	idcClient.getConfig().setProperty("http.library", RIDCHttpConstants.HttpLibrary.apache4.name());
	return idcClient;
	}

inside  public Map searchLatestUCMDoc(IdcClient idcClient, IdcContext idcContext) throws IdcClientException  method during the execution of below line I'm getting the below error

DataBinder serverBinder = response.getResponseAsBinder();