# How to check what prevents rake migrate?

**URL:** https://meta.discourse.org/t/how-to-check-what-prevents-rake-migrate/258047
**Category:** Self-hosting
**Created:** [March 14, 2023, 2:20am UTC](https://meta.discourse.org/t/how-to-check-what-prevents-rake-migrate/258047 "2023-03-14T02:20:54Z")
**Posts on this page:** 1
**Showing post:** 9

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### Author: ![satonotdead](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/satonotdead/32/447830_2.png) [@satonotdead](https://meta.discourse.org/u/satonotdead)
#### Post date: [March 14, 2023, 2:01pm UTC](https://meta.discourse.org/t/how-to-check-what-prevents-rake-migrate/258047/9 "2023-03-14T14:01:52Z")

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Thanks Robert, I asked because clearly I’m not a DB guy and I have backups BTW but it’s always better to do not deliberately the wrong 😎

The bot is not modified by me but I’m using default categories on every group and it seems to breaks your implementation.

There are more info here on Meta, I hope you can find this out and add some checkings to avoid the issue:

> [@Signup error: PG::UniqueViolation (ERROR: duplicate key value violates unique constraint](https://meta.discourse.org/t/signup-error-pg-uniqueviolation-error-duplicate-key-value-violates-unique-constraint/172572/2):
>
> Looks like your automatic watching groups have a duplicate in them. Not sure how this is possible, but can you try resetting the site setting for auto watching ?

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