Apologies for the trouble. This looks related to the embeddings config changes I’ve been working on. Things should migrated automatically, but it appears this wasn’t the case.
Could you please tell me which embedding service are you using? Also, could you check if config was copied to the new table in your site by running in a rails console:
EmbeddingDefinition.last&.id
If that returned an ID, you could then set the model by doing:
SiteSetting.ai_embeddings_selected_model = EmbeddingDefinition.last&.id
I moved these posts into a new topic since the other one was related to the PG upgrade