}

                // Cleanup lease manager
                if (leaseManager != null) {
                    try {
                        leaseManager.shutdown();
                        log.debug("Lease manager shutdown on session logoff");
                    } catch (Exception e) {
                        log.warn("Error shutting down lease manager during logoff", e);
                    }

        }
        if (configId.length() < 2) {
            throw new FessSystemException("Invalid configId length: " + configId + ". ConfigId must be at least 2 characters long.");
        }
        final CrawlingConfig config = crawlingConfigHelper.getCrawlingConfig(configId);
        if (config == null) {
            throw new FessSystemException("No crawlingConfig: " + configId);