Management Server Unable to Retrieve vCenter Datacenter List

Greetings all--  Working to setup an IsilonSD Edge POC and after successfully deploying the management server OVA and registering the vCenter, when I go to create the cluster it bombs out retrieving the datacenter list.

Looking at the /var/log/virtmgmt/isilonsd.log  logfile is see the follow java exception error....  any thoughts?

[root@isilonsdedge-mgt1 virtmgmt]# cat isilonsd.log

2018-07-11 08:20:49,581 [main] INFO  com.emc.isi.vi.sdk.App - CWD /usr/share/virtmgmt

2018-07-11 08:20:52,992 [main] INFO  com.emc.isi.vi.sdk.SessionManager - Service IP 192.168.1.188 resolves to hostname vcenter01.

2018-07-11 08:20:53,007 [main] INFO  com.emc.isi.vi.core.virtual.vsphere.VSSessionObject - Creating new vSphere connection for  administrator@vsphere.local on 192.168.1.188

2018-07-11 08:20:53,528 [main] INFO  com.emc.isi.vi.core.virtual.vsphere.VSSessionObject - Successfully created vSphere connection for  administrator@vsphere.local on 192.168.1.188 Key: null

2018-07-11 08:21:49,241 [play-akka.actor.default-dispatcher-5] INFO  akka.event.slf4j.Slf4jLogger - Slf4jLogger started

2018-07-11 08:22:01,613 [play-akka.actor.default-dispatcher-9] INFO  com.emc.isi.vi.sdk.ManageServers - Attempting to login.

2018-07-11 08:22:01,616 [play-akka.actor.default-dispatcher-9] INFO  com.emc.isi.vi.sdk.ManageServers - Login successful.

2018-07-11 08:22:02,432 [play-akka.actor.default-dispatcher-4] INFO  com.emc.isi.vi.core.virtual.vsphere.VSServers - Plugin already registered for https://192.168.1.250:9443

2018-07-11 08:22:09,320 [play-akka.actor.default-dispatcher-8] INFO  com.emc.isi.vi.core.virtual.vsphere.VSServers - Plugin already registered for https://192.168.1.250:9443

2018-07-11 08:23:28,198 [play-akka.actor.default-dispatcher-2] ERROR akka.actor.ActorSystemImpl - exception on LARS’ timer thread

java.lang.OutOfMemoryError: GC overhead limit exceeded

        at akka.dispatch.AbstractNodeQueue. (AbstractNodeQueue.java:22)

        at akka.actor.LightArrayRevolverScheduler$TaskQueue. (Scheduler.scala:443)

        at akka.actor.LightArrayRevolverScheduler$$anon$8.nextTick(Scheduler.scala:409)

        at akka.actor.LightArrayRevolverScheduler$$anon$8.run(Scheduler.scala:375)

        at java.lang.Thread.run(Thread.java:748)

2018-07-11 08:23:38,606 [play-akka.actor.default-dispatcher-2] ERROR akka.actor.ActorSystemImpl - Uncaught error from thread [play-akka.actor.default-dispatcher-8] shutting down JVM since 'akka.jvm-exit-on-fatal-error' is enabled

java.lang.OutOfMemoryError: GC overhead limit exceeded

        at org.dom4j.DocumentFactory.createElement(DocumentFactory.java:144)

        at org.dom4j.tree.AbstractBranch.addElement(AbstractBranch.java:185)

        at org.dom4j.io.SAXContentHandler.startElement(SAXContentHandler.java:243)

        at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)

        at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)

        at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)

        at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)

        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)

        at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)

        at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)

        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)

        at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)

        at org.dom4j.io.SAXReader.read(SAXReader.java:465)

        at org.dom4j.io.SAXReader.read(SAXReader.java:343)

        at com.vmware.vim25.ws.XmlGenDom.fromXML(XmlGenDom.java:79)

        at com.vmware.vim25.ws.SoapClient.unMarshall(SoapClient.java:212)

        at com.vmware.vim25.ws.WSClient.invoke(WSClient.java:93)

        at com.vmware.vim25.ws.VimStub.retrieveProperties(VimStub.java:106)

        at com.vmware.vim25.mo.PropertyCollector.retrieveProperties(PropertyCollector.java:98)

        at com.vmware.vim25.mo.InventoryNavigator.retrieveObjectContents(InventoryNavigator.java:103)

        at com.vmware.vim25.mo.InventoryNavigator.searchManagedEntities(InventoryNavigator.java:53)

        at com.vmware.vim25.mo.InventoryNavigator.searchManagedEntities(InventoryNavigator.java:30)

        at com.emc.isi.vi.core.virtual.vsphere.util.VSphereMOR.getAllDatacentersInVcenter(VSphereMOR.java:279)

        at com.emc.isi.vi.sdk.ManageHost.getListOfDcs(ManageHost.java:226)

        at controllers.HostResourcesAction$5.runTask(HostResourcesAction.java:105)

        at controllers.AsyncActionController.lambda$promiseOfResult$0(AsyncActionController.java:45)

        at controllers.AsyncActionController$$Lambda$3/932598196.apply(Unknown Source)

        at play.core.j.FPromiseHelper$$anonfun$promise$2.apply(FPromiseHelper.scala:36)

        at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)

        at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)

        at play.core.j.HttpExecutionContext$$anon$2.run(HttpExecutionContext.scala:40)

        at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:41)

[root@isilonsdedge-mgt1 virtmgmt]#