Fix

src/legacymodule.js

@@ -1,8 +1,18 @@
 import NullClusterClient from './io/cluster/nullclusterclient';
+import Config from './config';
+import IOConfiguration from './configuration/ioconfig';
 
 class LegacyModule {
+    getIOConfig() {
+        if (!this.ioConfig) {
+            this.ioConfig = IOConfiguration.fromOldConfig(Config);
+        }
+
+        return this.ioConfig;
+    }
+
     getClusterClient() {
-        return new NullClusterClient();
+        return new NullClusterClient(this.getIOConfig());
     }
 
     onReady() {