Unhandled Error Traceback (most recent call last):

Issue with websocket code execution on 1st run it gave me the data but later its giving the following error
Unhandled Error
Traceback (most recent call last):
File "C:\Users\meetv\anaconda3\lib\site-packages\twisted\python\log.py", line 96, in callWithLogger
return callWithContext({"system": lp}, func, *args, **kw)
File "C:\Users\meetv\anaconda3\lib\site-packages\twisted\python\log.py", line 80, in callWithContext
return context.call({ILogContext: newCtx}, func, *args, **kw)
File "C:\Users\meetv\anaconda3\lib\site-packages\twisted\python\context.py", line 117, in callWithContext
return self.currentContext().callWithContext(ctx, func, *args, **kw)
File "C:\Users\meetv\anaconda3\lib\site-packages\twisted\python\context.py", line 82, in callWithContext
return func(*args, **kw)
--- ---
File "C:\Users\meetv\anaconda3\lib\site-packages\twisted\internet\selectreactor.py", line 148, in _doReadOrWrite
why = getattr(selectable, method)()
File "C:\Users\meetv\anaconda3\lib\site-packages\twisted\internet\tcp.py", line 248, in doRead
return self._dataReceived(data)
File "C:\Users\meetv\anaconda3\lib\site-packages\twisted\internet\tcp.py", line 253, in _dataReceived
rval = self.protocol.dataReceived(data)
File "C:\Users\meetv\anaconda3\lib\site-packages\twisted\protocols\tls.py", line 330, in dataReceived
self._flushReceiveBIO()