Describe the bug
After deploying the Messaging Extension Bot to Teams, I get "An error occurred while starting the application." on my home page for the bot in my default browser
SDK Version
.NET Core 4.628008.02 x86 v 4.0.0.0
.Net Version
Microsoft.AspNet.Core.Hosting version 2.2.7-servicing-10089
Expected behavior
The normal home page will show "Success!" You can find your bot at this http address... and from there Teams will be able to use Echo bot, for example.
Screenshots

Additional context
I'm trying to just get a basic Messaging Extension bot working. Something very simple, just like the Echo bot, where if the user types "Hello" in the conversation, you can easily submit back from TeamsActivityHandler a MessageFactory with "Hello". So for Messaging Extension, I am assuming this sample will allow me to put "Hello world!" within the Messaging Extension Frame. Or if I try to type text in the query, that the text can perhaps be echoed back to the Messaging Extension with some simple sample list. If I type 1, the response can see from within TeamsActivityHander a 1, and reply back with 1. Hello World. But I suppose the first hurdle is just having the sample run would be great!
Describe the bug
After deploying the Messaging Extension Bot to Teams, I get "An error occurred while starting the application." on my home page for the bot in my default browser
SDK Version
.NET Core 4.628008.02 x86 v 4.0.0.0
.Net Version
Microsoft.AspNet.Core.Hosting version 2.2.7-servicing-10089
Expected behavior
The normal home page will show "Success!" You can find your bot at this http address... and from there Teams will be able to use Echo bot, for example.
Screenshots

Additional context
I'm trying to just get a basic Messaging Extension bot working. Something very simple, just like the Echo bot, where if the user types "Hello" in the conversation, you can easily submit back from TeamsActivityHandler a MessageFactory with "Hello". So for Messaging Extension, I am assuming this sample will allow me to put "Hello world!" within the Messaging Extension Frame. Or if I try to type text in the query, that the text can perhaps be echoed back to the Messaging Extension with some simple sample list. If I type 1, the response can see from within TeamsActivityHander a 1, and reply back with 1. Hello World. But I suppose the first hurdle is just having the sample run would be great!