Not able to pull messages from pubsub in azure functions python

Question

I am trying to pull messages from google pub sub using https://pypi.org/project/google-cloud-pubsublite/ but when I execute the function app the pubsublite code is not executed and the function timesout. Now when I looked in to the implementation the SubscriberClient class makes a threadpool executor in the backend which might be causing an issue. So is there any issue with threading in azure function?? And is there any way to achieve my objective??