weizhouapache commented on issue #11941:
URL: https://github.com/apache/cloudstack/issues/11941#issuecomment-3989846065
I face the same issue when restore a backup
it works after I applied the workaround as below
```
server/src/main/java/com/cloud/vm/UserVmManagerImpl.java | 3 +++
1 file changed, 3 insertions(+)
diff --git a/server/src/main/java/com/cloud/vm/UserVmManagerImpl.java
b/server/src/main/java/com/cloud/vm/UserVmManagerImpl.java
index 2308fbc8784..2292094869c 100644
--- a/server/src/main/java/com/cloud/vm/UserVmManagerImpl.java
+++ b/server/src/main/java/com/cloud/vm/UserVmManagerImpl.java
@@ -5847,6 +5847,9 @@ public class UserVmManagerImpl extends ManagerBase
implements UserVmManager, Vir
String reservationId = vmEntity.reserve(planner, plan, new
ExcludeList(), Long.toString(callerUser.getId()));
vmEntity.deploy(reservationId, Long.toString(callerUser.getId()),
params, deployOnGivenHost);
+ if (params == null) {
+ params = new HashMap<>();
+ }
Pair<UserVmVO, Map<VirtualMachineProfile.Param, Object>>
vmParamPair = new Pair(vm, params);
if (vm != null && vm.isUpdateParameters()) {
// this value is not being sent to the backend; need only for
api
```
cc @abh1sar @shwstppr
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