Original url is based on https://github.com/Microsoft/BotBuilder-V3/issues/105
When you develop bot via MS bot framework. sometimes, you can recieve "sorry, my bot has a error"
it possibliy multiple users sends message to your Bot services at same time. I 've tested two different users who send message to bot service. the later one who always got "Sorry my bot has a error".
the main reason is that "Directline" creates convesation, it must have unique id in the from json object.
Please apply different from id, when you are at different conversation.
if you want to see detail, please go to gitbut url https://github.com/Microsoft/BotBuilder-V3/issues/105