stripe data pull batch null pointer fix

cmsWebApp/src/performa/batch/PullStripeDataBatch.java

@@ -52,6 +52,12 @@ public class PullStripeDataBatch  extends ORMBatch
             
             for (Plan plan : plansList)
             {
+                if(plan.getAmount() == null)
+                {
+                    // tired plans have null value for amount: performa is not using tired plans
+                    continue;
+                }
+                
                 Filter<PaymentPlan> filter      =   PaymentPlan.SearchByAll().andStripeReference(new EqualsFilter<>(plan.getId()));
                 List<PaymentPlan>   activePlans =   (List<PaymentPlan>) CollectionFilter.filter(Arrays.asList(paymentPlans) , filter);