# Plugin causing errors during rebuild **URL:** \ **Category:** Self-hosting\ **Created:** [October 6, 2022, 9:35am UTC](https://meta.discourse.org/t/plugin-causing-errors-during-rebuild/241110 "2022-10-06T09:35:29Z")\ **Posts on this page:** 1\ **Showing post:** 24
**Author:** ![pfaffman](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/pfaffman/32/120154_2.png) [@pfaffman](https://meta.discourse.org/u/pfaffman)\ **Post date:** [October 6, 2022, 8:35pm UTC](https://meta.discourse.org/t/plugin-causing-errors-during-rebuild/241110/24 "2022-10-06T20:35:47Z")
> [@angus](#): > > I’ll respectfully disagree with you there Well, I mostly defer to you on this, and I think we really agree. I think it’s true that the migration works if the data aren’t broken. We agree that if the data are broken it should fail more gracefully that it does now. > [@Jaap-Jan\_Swijnenburg](#): > > At least every month, we run our updates, so it’s not like there is a huge gap between versions. Yes, but the data likely were corrupted years ago (that’s the case on the site that I am familiar with), but you didn’t notice because it didn’t fail catastrophically. I’m pretty sure that it wasn’t managing the upvotes as expected, but no one noticed. > [@Jaap-Jan\_Swijnenburg](#): > > How would I be able to connect to the Discourse DB myself, to verify what’s in the post\_custom\_fields table? I’d do it from rails, something like this: ```plaintext ./launcher enter app rails c ``` Then stuff like this: ```plaintext all_votes=PostCustomField.where(name: "vote_history") likely_broken_votes=PostCustomField.where(name: "vote_history").where("value like '\"%'") ``` Look at just the id and data: ```plaintext all_votes.pluck(:id,:value) ``` Get just one pcf: ```plaintext pcf=PostCustomField.find(1234) ``` Fix it ```plaintext pcf.value='the stuff you really want in it' pcf.save ``` --- _[View the full topic](https://meta.discourse.org/t/plugin-causing-errors-during-rebuild/241110)._