On an self hosted instance of phabricator we are facing this issue quite frequently. There seem to be multiple routes via which users end here
- Added a reference to a user (@<userName>) and could not answer any more questions after that. the initial error was **Attempying to access attached data on PonderAnswer (via getQuestion()) but the data is not actually attached.** User gets blocked from answering all other questions after this.
- Answering a particular wuestion posted on Ponder. All users trying to answer that question kept getting blocked.
etc
The way they get blocked is :
User gets a record in the `[phabricator_ponder].[ponder_answer]` table for `questionID =0`.
Resolution :
`DELETE FROM ponder_answer where questionID=0;`
However this has suddenly become too frequent. Is this a known issue or a bug that has been already resolved.