Update app.py

app.py

@@ -344,7 +344,7 @@ async def handle_user_input(websocket, process):
             message = await websocket.recv()
             user_input = json.loads(message)
             print(user_input)
-            print(f"Received user input: {user_input["command"]["command"]}")
+            print(f'Received user input: {user_input["command"]["command"]}')
             if not is_valid_input(user_input):
                 await websocket.send("Invalid input. Please try again.")
                 continue