Empty message (no "text") is not a valid message
{"name":"GitLab Bot","icon":"
https://s3.amazonaws.com/flockapps.resources/prod/default_webhook.png","xmlns":"http://talk.to/extension"},"visibleToPeer":true},"senderBot":false,"type":"MESSAGE";
}
because of this it throws an erroe "Hook executed successfully but returned
HTTP 400 {"error"=>"internal_error"}
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![https://s3.amazonaws.com/flockapps.resources/prod/default_webhook.png","xmlns":"http://talk.to/extension"},"visibleToPeer":true},"senderBot":false,"type":"MESSAGE"](https://s3.amazonaws.com/flockapps.resources/prod/default_webhook.png","xmlns":"http://talk.to/extension"},"visibleToPeer":true},"senderBot":false,"type":"MESSAGE"){kind=link}