Issue in using Change Feed for the Materialized View Pattern

[ShanthiTV]

I have followed the lab guide,
https://github.com/AzureCosmosDB/labs/blob/master/dotnet/labs/08-change_feed_with_azure_functions.md

All the initial steps are performed successfully.

On testing to confirm if the Materialized View Function works,
The dotnet run from the DataGenerator terminal starts to generate data and I see * in it.
The dotnet run from the ChangeFeedConsole terminal starts to receive the data and writes the console messages.
The func host start from the ChangeFeedFunctions folder builds the project and then do not write any console messages nor the database is populated.
There are no error messages as well.