The bug happened when I connect the bot with luis and facebook, the bot received the locale as null and that cause problem and the bot on messenger doesn't response.
Latest version
Steps to reproduce the behavior:
work probably
@Olakhrisat what value do you have set on the defaultLanguage field in your bot settings? In the case of a missing locale, it should call back to whatever language you have provided here.
@Olakhrisat what value do you have set on the
defaultLanguagefield in your bot settings? In the case of a missing locale, it should call back to whatever language you have provided here.
"defaultLanguage": "en-us",
Create a pr:https://github.com/microsoft/botbuilder-dotnet/pull/4344 in dotnet sdk to fix this.
It exists a workaround to fix this in composer runtime temporarily:
Add the following code in BotFramework-Composer\runtime\dotnet\core\ComposerBot.cs will resolve this issue as well.

Create a pr:microsoft/botbuilder-dotnet#4344 in dotnet sdk to fix this.
It exists a workaround to fix this in composer runtime temporarily:
Add the following code in BotFramework-Composer\runtime\dotnet\core\ComposerBot.cs will resolve this issue as well.
I resolved the issue for now but I just wanted the others to know about and fix it in the future releases. :)
Closing, see https://github.com/microsoft/BotFramework-Composer/issues/3729#issuecomment-665543904