Fix several problems with gift registry api

backend/app/api/routes/events/gifts.py

@@ -926,8 +926,13 @@ def cancel_gift_reservation(
 
     # For admin users, allow direct cancellation
     if current_user:
-        return gift_item_crud.cancel_reservation(db, gift_id=item_id, guest_id=guest_id)
+        try:
+            return gift_item_crud.cancel_reservation(db, gift_id=item_id, guest_id=guest_id)
+        except ValueError as e:
+            raise HTTPException(status_code=400, detail=str(e))
 
+    # Missing the return statement here, which is also a problem
+    return gift_item_crud.cancel_reservation(db, gift_id=item_id, guest_id=guest_id)
 
 # ===== GIFT PURCHASES ===== #
 
@@ -1042,6 +1047,4 @@ def read_gift_purchases_by_guest(
     if not event or not event.is_public:
         raise HTTPException(status_code=403, detail="Not enough permissions")
 
-    gifts = gift_purchase_crud.get_gift_reservations_by_guest(db, guest_id=guest_id)
-    print(gifts)
-    return gifts
+    return gift_purchase_crud.get_gift_reservations_by_guest(db, guest_id=guest_id)