botframework - Azure Bot Framework Echo Bot NullReferenceException

Question

I just created a new bot with bot framework V4 using the Bot Framework v4 SDK Templates for VS 2019. I created a new Echo bot based on .net core 3.1, when I run it and try to use it with the Emulator, I get an exception right away as this:

System.NullReferenceException: 'Object reference not set to an instance of an object.'

Any idea?

Detailed Stacktrace: https://gist.github.com/M365Devme/74e0aab0b4cbade9900835bd0cc6b097

This is the project I used:

question from:https://stackoverflow.com/questions/65623015/azure-bot-framework-echo-bot-nullreferenceexception

Answer 1

From this comment:

This is a known issue in 4.11 sdk. The exception is internally caught, and can be safely ignored. More information can be found here: https://github.com/microsoft/botbuilder-dotnet/issues/4867