diff --git a/modules/cloudsim/src/main/java/org/cloudbus/cloudsim/EX/disk/HddVm.java b/modules/cloudsim/src/main/java/org/cloudbus/cloudsim/EX/disk/HddVm.java
index 6a06642c1..806df9172 100644
--- a/modules/cloudsim/src/main/java/org/cloudbus/cloudsim/EX/disk/HddVm.java
+++ b/modules/cloudsim/src/main/java/org/cloudbus/cloudsim/EX/disk/HddVm.java
@@ -196,7 +196,7 @@ public LinkedHashSet<Integer> getHddsIds() {
 
     @Override
     public List<Double> getCurrentRequestedMips() {
-        if (getHost().getGuestScheduler() instanceof VmSchedulerMapVmsToPes<?> scheduler) {
+       if (getHost() != null && getHost().getGuestScheduler() instanceof VmSchedulerMapVmsToPes<?> scheduler) {
 
             List<Double> currentRequestedMips = getCloudletScheduler().getCurrentRequestedMips();
             if (isBeingInstantiated()) {
diff --git a/modules/cloudsim/src/main/java/org/cloudbus/cloudsim/core/CloudSim.java b/modules/cloudsim/src/main/java/org/cloudbus/cloudsim/core/CloudSim.java
index e57efaaca..b2459c02b 100644
--- a/modules/cloudsim/src/main/java/org/cloudbus/cloudsim/core/CloudSim.java
+++ b/modules/cloudsim/src/main/java/org/cloudbus/cloudsim/core/CloudSim.java
@@ -665,7 +665,9 @@ private static void dispatchEvent(SimEvent e) {
                         waitPredicates.remove(dstId);
                     }
                 }
-				destEnt.getIncomingEvents().add(e);
+				if(destEnt.getIncomingEvents() != null) {
+					destEnt.getIncomingEvents().add(e);
+				}
             }
 			case SimEvent.HOLD_DONE -> entities.get(srcId).setState(SimEntity.EntityStatus.RUNNABLE);
 			default -> {