ravening commented on a change in pull request #4396:
URL: https://github.com/apache/cloudstack/pull/4396#discussion_r503298089



##########
File path: server/src/main/java/com/cloud/vm/UserVmManagerImpl.java
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@@ -3821,7 +3821,7 @@ private void checkIfHostNameUniqueInNtwkDomain(String 
hostName, List<? extends N
                 // * verify that there are no duplicates
                 if (hostNames.contains(hostName)) {
                     throw new InvalidParameterValueException("The vm with 
hostName " + hostName + " already exists in the network domain: " + 
ntwkDomain.getKey() + "; network="
-                            + _networkModel.getNetwork(ntwkId));
+                            + _networkModel.getNetwork(ntwkId).getName());

Review comment:
       @DaanHoogland @GabrielBrascher most of the time the network name will be 
nonnull but there is no harm adding an extra if check. I will modify the code




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