Microsoft Bot Framework Emulator unable to connect

[justinas-b]

Rasa version: Rasa 1.6.1

Python version: Python 3.7.5

Operating system (windows, osx, ...): OsX

Issue:
When testing chat bot with Microsoft Bot Framework Emulator [Version 4.7.0-96660 (4.7.0-96660.96660)], Rasa throws below error:

> rasa run
2020-01-10 15:33:05 INFO     root  - Starting Rasa server on http://localhost:5005
2020-01-10 15:33:10 INFO     absl  - Entry Point [tensor2tensor.envs.tic_tac_toe_env:TicTacToeEnv] registered with id [T2TEnv-TicTacToeEnv-v0]
2020-01-10 15:33:24 INFO     rasa.core.channels.botframework  - Not received message type
2020-01-10 15:33:35 ERROR    rasa.core.channels.botframework  - Could not get BotFramework token
2020-01-10 15:33:35 ERROR    rasa.core.channels.botframework  - Exception when trying to handle message.Failed to parse: http://localhost:54380v3/conversations/c672c2f1-33ad-11ea-80d3-33aac016e43a|livechat/activities

Please note that part saying to Failed to parse : http://localhost:54380v3/conversations..... I believe this occurs due to fact that Bot Framework Emulator does not but / at the end of serviceUrl: "http://localhost:54380" in it's payload:

{
  "channelData": {
    "clientActivityID": "1578663214742wco867ru71r",
    "clientTimestamp": "2020-01-10T13:33:34.742Z"
  },
  "channelId": "emulator",
  "conversation": {
    "id": "c672c2f1-33ad-11ea-80d3-33aac016e43a|livechat"
  },
  "entities": [
    {
      "requiresBotState": true,
      "supportsListening": true,
      "supportsTts": true,
      "type": "ClientCapabilities"
    }
  ],
  "from": {
    "id": "25eff8db-460a-450f-a98e-be73910fac0c",
    "name": "User",
    "role": "user"
  },
  "id": "ccdaedc0-33ad-11ea-a307-0bf6e7c83078",
  "localTimestamp": "2020-01-10T15:33:34+02:00",
  "locale": "en-US",
  "recipient": {
    "id": "3524d820-33ac-11ea-80d3-33aac016e43a",
    "name": "Bot",
    "role": "bot"
  },
  "serviceUrl": "http://localhost:54380",
  "text": "x",
  "textFormat": "plain",
  "timestamp": "2020-01-10T13:33:34.748Z",
  "type": "message"
}

Command or request that led to error:

rasa run

[justinas-b]

Related to #2760

[sara-tagger]

Thanks for raising this issue, @wochinge will get back to you about it soon✨

Please also check out the docs and the forum in case your issue was raised there too 🤗