diff --git a/limiter/batch_limiter.py b/limiter/batch_limiter.py
index df730e3..64016a5 100644
--- a/limiter/batch_limiter.py
+++ b/limiter/batch_limiter.py
@@ -1,4 +1,5 @@
 import asyncio
+import logging
 from datetime import datetime
 
 from redis import asyncio as aioredis
@@ -51,7 +52,7 @@ class BatchLimiter:
                             await redis.set(key, 1)
                             await redis.set(f"{key}:start_time", datetime.now().isoformat())
                 except aioredis.RedisError as e:
-                    print(f"Redis error: {e}")
+                    logging.error(f"Redis error: {e}")
                     await asyncio.sleep(1)
 
     async def acquire_wildberries(self, key):
diff --git a/queries/general.py b/queries/general.py
index 6fd8cca..4d7841c 100644
--- a/queries/general.py
+++ b/queries/general.py
@@ -243,7 +243,7 @@ async def get_stocks_data(
                 ),
                 else_=0)
             .label('warehouse_stock'),
-            func.coalesce(mix_stock_full_subquery.c.mix_stock, 0).label('mix_stock'),
+            mix_stock_full_subquery.c.mix_stock.label('mix_stock'),
             func.coalesce(in_block_subquery.c.in_block_value, 1).label('in_block_value'),
             is_master_subquery.c.is_master.label('is_master'),
             func.coalesce(slaves_stock_subquery.c.slaves_stock, 0).label('slaves_stock'),
@@ -313,6 +313,10 @@ async def get_stocks_data(
             })
             continue
         is_mix = mix_stock is not None
+
+        if not mix_stock:
+            mix_stock = 0
+
         if all([is_mix, slaves_stock > 0]):
             mix_stock = 0
         balance_limit = price_purchase > company.balance
@@ -338,5 +342,4 @@ async def get_stocks_data(
             'full_stock': full_stock,
             'marketplace_product': marketplace_product,
         })
-
     return response