basic booking load behavior

admin/src/app/features/calendar/components/calendar-view/single-event-booking-list/single-event-booking-list.html

@@ -18,7 +18,7 @@
         <tbody>
           @for (booking of bookings.value()?.data; track booking) {
             <tr>
-              <td>{{formatDateTime(booking.occurrenceStartTime)}}</td>
+              <td>{{formatDateTime(booking.createdAt)}}</td>
               <td>{{booking.reservedSeatsCount}}</td>
               <td><rs-daisy-button [variant]="'error'">
                 Lemondás

admin/src/app/features/calendar/components/calendar-view/single-event-booking-list/single-event-booking-list.ts

@@ -74,7 +74,10 @@ export class SingleEventBookingList {
     this.activePage.set($event);
   }
 
-  formatDateTime( dateStr: string|Date){
+  formatDateTime( dateStr?: string|Date|null){
+    if ( !dateStr ){
+      return "";
+    }
     return format(new Date(dateStr),'yyyy-MM-dd HH:mm');
   }