Add Error status card

(Resurrected to not waste Merge Request IDs..)

Analysts sometimes make a new MC Requests and put the yaml file outside the folder. This is obviously a no no and the API rightly fails the pipeline.

The problem is, this information is not clear enough. There is an error message but it is rather hard to see, needing to hover over the alert triangle to see it.

This merge request adds a big card with the error message in case the pipeline fails for a similar reason.