backend/src/main/java/com/tourguide/api/guide/GuideNotificationController.java
@@ -28,7 +28,7 @@ } @PutMapping("/{id}/read") public ApiResponse<Void> markRead(@AuthenticationPrincipal AppUserPrincipal principal, @PathVariable Long id) { public ApiResponse<Void> markRead(@AuthenticationPrincipal AppUserPrincipal principal, @PathVariable String id) { notificationService.markRead(principal.getUserId(), id); return ApiResponse.success(); }