src/main/java/com/example/nto/service/impl/BookingServiceImpl.java

@@ -70,7 +70,7 @@ public class BookingServiceImpl implements BookingService {
         List<Place> allPlaces = placeRepository.findAll();
         List<Booking> bookings = bookingRepository.findByDateIn(targetDates);
         Map<LocalDate, List<Booking>> bookingsByDate = bookings.stream()
-                .collect(Collectors.groupingBy(Booking::getDate));
+                .collect(Collectors.groupingBy(Booking::getDate, Collectors.toList()));
         Map<String, List<Booking.AvailablePlaceDto>> result = new LinkedHashMap<>(); // Используем LinkedHashMap для сохранения порядка
 
         for (LocalDate date : targetDates) {