First step of creating an error reporting endpoint that can scale up to WMF traffic:
|Resolved||Ottomata||T501 Create WMF endpoint for error logging - part 1 (producer)|
This has happened (slightly differently, via EventGate). T226986: Client side error logging production launch is probably the closest related task. I'll guessign it to @Ottomata, I think he did most of the work.