diff --git a/resolvers/chats.py b/resolvers/chats.py
index 0286b97..00e8f14 100644
--- a/resolvers/chats.py
+++ b/resolvers/chats.py
@@ -66,11 +66,14 @@ async def create_chat(_, info, title="", members=None):
         if len(members) == 2 and title == "":
             chatset1 = await redis.execute("SMEMBERS", f"chats_by_author/{members[0]}")
             chatset2 = await redis.execute("SMEMBERS", f"chats_by_author/{members[1]}")
-            for c in chatset1.intersection(chatset2):
-                chat = await redis.execute("GET", f"chats/{c}")
-                if chat["title"] == "":
-                    logger.info("[inbox] createChat found old chat")
-                    return {"chat": chat, "error": "existed"}
+            if isinstance(chatset1, set) and isinstance(chatset2, set):
+                for c in chatset1.intersection(chatset2):
+                    chat_result = await redis.execute("GET", f"chats/{c}")
+                    if chat_result:
+                        chat = json.loads(chat_result)
+                        if chat["title"] == "":
+                            logger.info("[inbox] createChat found old chat")
+                            return {"chat": chat, "error": "existed"}
 
         chat_id = str(uuid.uuid4())
         chat: Chat = {
diff --git a/resolvers/load.py b/resolvers/load.py
index cf89cbb..ed73ac0 100644
--- a/resolvers/load.py
+++ b/resolvers/load.py
@@ -88,11 +88,10 @@ async def load_chats(
                 lock = asyncio.Lock()
                 if len(cids) == 0:
                     logger.debug(f"no chats for user with id={author_id}")
-                    r = await create_chat(
-                        None, info, members=[2]
-                    )  # member with id = 2 is discours
-                    logger.debug(f"created chat: {r['chat_id']}")
-                    cids.append(r["chat"]["id"])
+                    r = await create_chat(None, info, members=[2])  # member with id = 2 is discours
+                    if isinstance(r, dict) and "chat" in r:
+                        logger.debug(f"created chat: {r['chat']['id']}")
+                        cids.append(r["chat"]["id"])
 
                 logger.debug(f"getting data for {len(cids)} user's chats")
                 for cid in cids: