# Dev migration error: Discourse AI

**URL:** https://meta.discourse.org/t/dev-migration-error-discourse-ai/376173
**Category:** Development
**Tags:** ai
**Created:** [July 28, 2025, 12:44pm UTC](https://meta.discourse.org/t/dev-migration-error-discourse-ai/376173 "2025-07-28T12:44:52Z")
**Posts on this page:** 1
**Showing post:** 1

<div class="post-metadata">

### Author: ![merefield](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/merefield/32/176214_2.png) [@merefield](https://meta.discourse.org/u/merefield)
#### Post date: [July 28, 2025, 12:44pm UTC](https://meta.discourse.org/t/dev-migration-error-discourse-ai/376173/1 "2025-07-28T12:44:52Z")

</div>

```plaintext
PG::UndefinedTable: ERROR: relation "ai_topic_embeddings_1_1" does not exist
LINE 3: FROM ai_topic_embeddings_1_1;
                   ^
/home/robert/discourse/plugins/discourse-ai/db/migrate/20240611170905_move_embeddings_to_single_table_per_type.rb:51:in `up'
/home/robert/discourse/lib/freedom_patches/schema_migration_details.rb:8:in `block in exec_migration'
/home/robert/discourse/lib/freedom_patches/schema_migration_details.rb:8:in `exec_migration'
/home/robert/discourse/lib/migration/safe_migrate.rb:28:in `migrate'
/home/robert/discourse/lib/migration/safe_migrate.rb:53:in `migrate'
/home/robert/discourse/lib/tasks/db.rake:267:in `block (2 levels) in <main>'
/home/robert/discourse/lib/distributed_mutex.rb:53:in `block in synchronize'
/home/robert/discourse/lib/distributed_mutex.rb:49:in `synchronize'
/home/robert/discourse/lib/distributed_mutex.rb:49:in `synchronize'
/home/robert/discourse/lib/distributed_mutex.rb:34:in `synchronize'
/home/robert/discourse/lib/tasks/db.rake:242:in `block in <main>'
/home/robert/.rbenv/versions/3.3.2/bin/bundle:25:in `load'
/home/robert/.rbenv/versions/3.3.2/bin/bundle:25:in `<main>'

Caused by:
ActiveRecord::StatementInvalid: PG::UndefinedTable: ERROR: relation "ai_topic_embeddings_1_1" does not exist (ActiveRecord::StatementInvalid)
LINE 3: FROM ai_topic_embeddings_1_1;
                   ^
/home/robert/discourse/plugins/discourse-ai/db/migrate/20240611170905_move_embeddings_to_single_table_per_type.rb:51:in `up'
/home/robert/discourse/lib/freedom_patches/schema_migration_details.rb:8:in `block in exec_migration'
/home/robert/discourse/lib/freedom_patches/schema_migration_details.rb:8:in `exec_migration'
/home/robert/discourse/lib/migration/safe_migrate.rb:28:in `migrate'
/home/robert/discourse/lib/migration/safe_migrate.rb:53:in `migrate'
/home/robert/discourse/lib/tasks/db.rake:267:in `block (2 levels) in <main>'
/home/robert/discourse/lib/distributed_mutex.rb:53:in `block in synchronize'
/home/robert/discourse/lib/distributed_mutex.rb:49:in `synchronize'
/home/robert/discourse/lib/distributed_mutex.rb:49:in `synchronize'
/home/robert/discourse/lib/distributed_mutex.rb:34:in `synchronize'
/home/robert/discourse/lib/tasks/db.rake:242:in `block in <main>'
/home/robert/.rbenv/versions/3.3.2/bin/bundle:25:in `load'
/home/robert/.rbenv/versions/3.3.2/bin/bundle:25:in `<main>'

Caused by:
PG::UndefinedTable: ERROR: relation "ai_topic_embeddings_1_1" does not exist (PG::UndefinedTable)
LINE 3: FROM ai_topic_embeddings_1_1;

```

Anyone resolved this?

(Running PG 16.3)

For now I’ve deleted the plugin, and the rest of the migration go through.

---

_[View the full topic](https://meta.discourse.org/t/dev-migration-error-discourse-ai/376173)._