I got one of those too. I called the customer service to get another path home because of disturbances, and they just have robot answering. The robot started halfway through the call just reading pure json at me, and then said "to get this information as a message press 1" or something. This is what I got:

Here is your journey from undefined to undefined: BUSS 506 towards Karolinska sjukhuset 09:36 from undefined 10:18 arrived at undefined. Link to your journey.