Update app.py

app.py

@@ -16,7 +16,7 @@ from typing import List, Dict, Any
 try:
     from r2 import R2Service
     from LLM import LLMService
-    from ml_engine.data_manager import DataManager
+    from data_manager import DataManager
     from ml_engine.processor import MLProcessor
     from learning_hub.hub_manager import LearningHubManager
     from trade_manager import TradeManager