Failed to add Google Assistant Action to Botium, Botium Box, botium-cli

I am trying to connect a Google Assistant Action to Botium Box or botium-cli. I followed all the steps in the Botium Connector for Google Assistant explanation.

When I try to add the generated botium.json to Botium Box I get the following error message.

Chatbot connection failed - Loading Botium plugin failed

When I try to start the emulator in botium-cli I get this error

Error: Loading Botium plugin failed
at Validate.Validate.then (C:\Users\user\AppData\Roaming\npm\node_modules\botium-cli\node_modules\botium-core\src\containers\PluginConnectorContainer.js:59:15)

The botium.json looks like this

{
  "botium": {
    "Capabilities": {
      "PROJECTNAME": "Botium Project Google Assistant",
      "CONTAINERMODE": "google-assistant",
      "GOOGLE_ASSISTANT_CLIENT_ID": "xxx",
      "GOOGLE_ASSISTANT_CLIENT_SECRET": "xxx",
      "GOOGLE_ASSISTANT_REFRESH_TOKEN": "xxx",
      "GOOGLE_ASSISTANT_TYPE": "authorized_user",
      "GOOGLE_ASSISTANT_START_UTTERANCE": "talk to xxx",
      "GOOGLE_ASSISTANT_END_UTTERANCE": "Cancel"
    }
  }
}