if I quote not a bot message but a message from another employee, I get this error http://prntscr.com/pgwyac
And how to send image or image file to user by replying to bot. Images come from users, but they don`t come when support staff sending it to user by replying to bot message.
sending images to the user is not yet supported. Maybe in a future update. As for the error you get, you can ignore it for now. Also a thing that will be fixed with the next update.