Self-Hosted n8n 1.59.3 does not have Postgres PGVector Store and Postgres Chat Memory nodes

Questions
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1

Describe the problem/error/question

I have set up local n8n (latest stable v1.59.3) and wanted to try the solution from here https://www.youtube.com/watch?v=PEI_ePNNfJQ

but when importing that workflow locally I have some nodes not available (types from json):
When chat message received (@n8n/n8n-nodes-langchain.chatTrigger)
Retrieve Documents (@n8n/n8n-nodes-langchain.toolVectorStore)
Postgres Chat Memory (@n8n/n8n-nodes-langchain.memoryPostgresChat)

TTnHSIHP9V
TTnHSIHP9V1113Ă—653 54.9 KB

I can successfully manually re-add Chat Trigger, but for other 2 I didn’t find any relevant things.

Additionally, in n8n.io trial workspace I created to check things out, when I search “postgres” in nodes, I see 3:

  • Postgres
  • Postgres PGVector Store
  • Postgres Chat Memory

While locally I only see Postgres (the SQL connector to db, see screenshot)

Postgres PGVector Store was added in 1.58, so should be definitely in my installation (Release notes | n8n Docs)

n8n.io Cloud worskpace has the same version (i.e. 1.59.3)

The video was uploaded on Sep 5, that corresponds to n8n 1.57.0 (or 1.58.0, however unlikely).
What am I missing here?

What is the error message (if any)?

This node is not currently installed. It is either from a newer version of n8n, a [custom node](https://docs.n8n.io/integrations/creating-nodes/code/create-n8n-nodes-module/), or has an invalid structure

Please share your workflow

Source: ai-agents-masterclass/supabase-n8n-rag-agent/Supabase_RAG_AI_Agent.json at main · coleam00/ai-agents-masterclass · GitHub

Information on your n8n setup

  • n8n version: 1.59.3
  • Database (default: SQLite): postgres
  • n8n EXECUTIONS_PROCESS setting (default: own, main): own
  • Running n8n via (Docker, npm, n8n cloud, desktop app): docker
  • Operating system: Ubuntu 22.04
2

Hey @vkarbovnichy,

Can you try clearing your browser cache this should sort the issue out, If that doesn’t work give private browsing mode a go and see if that helps.

3

In incognito mode in Chrome that worked as expected.

I use Arc browser as a main one (it’s based on Chromium), and in that browser clearing cache did not help at all. The only thing that helped is doing a Sign-out and signing back again.

Tried to import the mentioned workflow again, tried to search “postgres” in all nodes - all worked fine!

1 Like
4

Perfect thanks for the update :slight_smile:

5

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