fix: convert json in string

main.py

@@ -220,8 +220,6 @@ async def websocket_endpoint(websocket: WebSocket,  room_id: str, user_id: int):
     await socket_manager.add_user_to_room(room_id, websocket)
 
     message = {
-        "user_id": user_id,
-        "room_id": room_id,
         "message": f"Student {user_id} connected to the classroom"
     }
 
@@ -231,12 +229,6 @@ async def websocket_endpoint(websocket: WebSocket,  room_id: str, user_id: int):
         while True:
             data = await websocket.receive_text()
 
-            message = {
-                "user_id": user_id,
-                "room_id": room_id,
-                "message": data
-            }
-
             prompt_response_dict = sendPromptChain(QA, data)
 
             await socket_manager.broadcast_to_room(room_id, json.dumps(prompt_response_dict))
@@ -245,8 +237,6 @@ async def websocket_endpoint(websocket: WebSocket,  room_id: str, user_id: int):
         await socket_manager.remove_user_from_room(room_id, websocket)
 
         message = {
-            "user_id": user_id,
-            "room_id": room_id,
             "message": f"User {user_id} disconnected from room - {room_id}"
         }