fix type error

Author: cadeban

web/src/features/data-centers/DataCenterDetails.tsx

@@ -50,9 +50,8 @@ export default function DataCenterDetails(): JSX.Element {
   const { estimatedPercentage } = selectedData || {};
   const roundedEstimatedPercentage = round(estimatedPercentage ?? 0, 0);
 
-  // Memoize the zone data to prevent unnecessary recalculations
   const parentZone = useMemo(
-    () => getAllZones(i18n.language)[zoneId].displayName,
+    () => (zoneId ? getAllZones(i18n.language)[zoneId].displayName : 'parent zone'),
     [zoneId]
   );