Azure Functions not processing messages

Question

Since this week my function app stopped processing all the messages sent to queue. The messages stay only in the queue. I thought it was something to do with the old app, so I created new apps and queues (session enabled) and still face the same issue. The messages stay only in the queue and the function app doesnt process them at all.

To send the messages I use the Python servicebus module and send the messages one by one. I tried changing the storage accounts to fix it by going through few articles but didnt help. The function app gets triggered locally. The function apps are deployed in app service plan
This isnt happening for all the other function apps I have. Only for the new I create

Also In the log stream I see the following errors in the azure function module

I also see the following error in log stream

**
The processor accept session call timed out. It will be tried again. (Namespace 'rs-core-servicebus.servicebus.windows.net', Entity path 'test-service'). Error Message: 'Azure.Messaging.ServiceBus.ServiceBusException: The operation did not complete within the allotted timeout of 00:00:59.9660000. The time allotted to this operation may have been a portion of a longer timeout.**

This is my queue. I doubt it has anything related to queue

All the function apps I create are not processing and messages from the queue at all. If I send the message manually from service bus explorer in AZ dashboard, it works.