The 'NULL' License Plate (2019)
According to their Twitter it’s still ongoing: https://twitter.com/droogie1xp/status/1471653205733871619
Sounds a lot like 'undefined behaviour', certainly unexpected at least.
I guess somewhere along the line a passed 'null' value is getting converted to a string for plate lookup.
More discussion here in 2019:
https://news.ycombinator.com/item?id=20676904 (471 comments)