Fix (#72)

Author: JuanFKurucz

RAGManager/app/models/chat.py

@@ -5,7 +5,8 @@
 
 from sqlalchemy.orm import Session
 
-from app.models.chat import ChatMessage, ChatSession
+from app.models.chat_message import ChatMessage
+from app.models.chat_session import ChatSession
 
 logger = logging.getLogger(__name__)