What's causing 500 Internal Server Error due to localhost:9000 being hit in bot framework?

Question

Getting this error every time I try to send a message to my bot, or after it responds with 3 messages in a row.

I put a try/catch around the code that\'s ge

Answer 1

I was also facing the “500 internal server error” updating to the latest "Bot Framework Emulator" solved my issue.

Link to Bot Framework Emulator :

Documentation:

Hope this helps.

Answer 2

We were having a similar issue in our app. Managed to resolve the 500 Invalid responses by not having a private LuisResult property in our dialog class that derived from LuisDialog.

I guess as the class was marked as Serializable it tried to serialize all the properties and a LuisResult can't be serialized.

Here's a code snippet:

Change:

[Serializable]
public class YourDialog : LuisDialog<MySerializableClass>
{
    private LuisResult _myPrivateProp;
}

To:

[Serializable]
public class YourDialog : LuisDialog<MySerializableClass>
{
    private string _myPrivateProp;//or whatever
}

Answer 3

Did you connect to your deployed service via the emulator?

If so that could generate this error, because when we see a message from channelId="emulator" async messages are routed to http://localhost:9000. That would cause this port to be used.

To test it deployed you should start with the Test window on the bot configuration page, or use the web chat control.