Update app.py

app.py

@@ -116,6 +116,22 @@ class SessionManager:
             except Exception as e:
                 logger.warning(f"Error during final session cleanup: {e}")
         self._session = None
+
+# Global session manager per event loop to handle multiple threads/loops
+_session_managers = weakref.WeakKeyDictionary()
+
+def get_session_manager():
+    """Get or create session manager for current event loop."""
+    try:
+        loop = asyncio.get_running_loop()
+        if loop not in _session_managers:
+            _session_managers[loop] = SessionManager()
+            logger.debug(f"📝 Created new SessionManager for event loop {id(loop)}")
+        return _session_managers[loop]
+    except RuntimeError:
+        # No event loop running
+        logger.warning("⚠️ No event loop running, cannot get session manager.")
+        return None
 # --- Enhanced Data Models ---
 
 class StockDataRequest(BaseModel):