rafaelweingartner commented on a change in pull request #2573: Cloudstack 10356
URL: https://github.com/apache/cloudstack/pull/2573#discussion_r181748782
 
 

 ##########
 File path: 
server/src/main/java/com/cloud/network/router/VirtualNetworkApplianceManagerImpl.java
 ##########
 @@ -2139,14 +2139,14 @@ public boolean startRemoteAccessVpn(final Network 
network, final RemoteAccessVpn
             }
 
             Answer answer = cmds.getAnswer("users");
-            if (!answer.getResult()) {
+            if (answer != null && !answer.getResult()) {
                 s_logger.error("Unable to start vpn: unable add users to vpn 
in zone " + router.getDataCenterId() + " for account " + vpn.getAccountId() + " 
on domR: "
                         + router.getInstanceName() + " due to " + 
answer.getDetails());
                 throw new ResourceUnavailableException("Unable to start vpn: 
Unable to add users to vpn in zone " + router.getDataCenterId() + " for account 
"
                         + vpn.getAccountId() + " on domR: " + 
router.getInstanceName() + " due to " + answer.getDetails(), DataCenter.class, 
router.getDataCenterId());
             }
             answer = cmds.getAnswer("startVpn");
-            if (!answer.getResult()) {
+            if (answer != null && !answer.getResult()) {
 
 Review comment:
   Same here

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