Handle nullness in renderCurrentUsage

If there is no usage here the map entry will be null.  Just skip
rendering if that is the case.

1 files changed, 1 insertions, 0 deletions

diff --git a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/restapi/billing/BillingApiHandler.java b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/restapi/billing/BillingApiHandler.java
index 8b0c2febe46..d6c6f5ff167 100644
--- a/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/restapi/billing/BillingApiHandler.java
+++ b/controller-server/src/main/java/com/yahoo/vespa/hosted/controller/restapi/billing/BillingApiHandler.java
@@ -308,6 +308,7 @@ public class BillingApiHandler extends LoggingRequestHandler {
     }
 
     private void renderCurrentUsage(Cursor cursor, Invoice currentUsage) {
+        if (currentUsage == null) return;
         cursor.setString("amount", currentUsage.sum().toPlainString());
         cursor.setString("status", "accrued");
         cursor.setString("from", currentUsage.getStartTime().format(DATE_TIME_FORMATTER));