Some errors, e.g. those caused by the request validation do not contain the URL or request parameters.
Example of a validation error saying a preferred language did not match the regex from the spec, but does not mention what the requested language was: https://logstash.wikimedia.org/app/kibana#/doc/logstash-*/logstash-2019.08.21/wikibase-termbox?id=AWyz1kqzZKA7RpiruGOa