Error while login

[snu11]

from perplexity import Perplexity
perplexity = Perplexity("xxx@gmail.com")

AssertionError                            Traceback (most recent call last)
Cell In[4], line 1
----> 1 perplexity = Perplexity("xxx@gmail.com")

File [C:\ProgramData\anaconda3\Lib\site-packages\perplexityai-0.1-py3.12.egg\perplexity\perplexity.py:38](file:///C:/ProgramData/anaconda3/Lib/site-packages/perplexityai-0.1-py3.12.egg/perplexity/perplexity.py#line=37), in Perplexity.__init__(self, email)
     35 self.backend_uuid: str = None # unused because we can't yet follow-up questions
     36 self.frontend_session_id: str = str(uuid4())
---> 38 assert self._ask_anonymous_user(), "failed to ask anonymous user"
     39 self.ws: WebSocketApp = self._init_websocket()
     40 self.ws_thread: Thread = Thread(target=self.ws.run_forever).start()

AssertionError: failed to ask anonymous user