Unrecognized node type: @n8n/n8n-nodes-langchain.toolWebScraper

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Subject: Error: “Unrecognized node type: @n8n/n8n-nodes-langchain.toolWebScraper” with Docker Install

Hello n8n Community,

I’m running into an issue with a specific node from the LangChain community package and would appreciate some help.

The Problem

When I try to execute a workflow that uses the LangChain Web Scraper tool, the execution fails with the following error:

Unrecognized node type: @n8n/n8n-nodes-langchain.toolWebScraper

The strange thing is that other nodes from the @n8n/n8n-nodes-langchain package, like the LLM Chain and LangChain Agent, seem to work correctly. The issue is specific to the toolWebScraper node.

My Environment & Setup

I am running n8n via Docker and have installed the community nodes by building a custom image.

  • n8n Version: [YOUR_N8N_VERSION] (Please replace this with your version, e.g., 1.45.1)
  • Installation Method: Docker with docker-compose.

Here are my configuration files:

Dockerfile

FROM n8nio/n8n:[YOUR_N8N_VERSION]

USER root

RUN npm install @n8n/n8n-nodes-langchain

USER node

docker-compose.yml (relevant service)

services:
  n8n:
    build: .
    restart: always
    ports:
      - "5678:5678"
    environment:
      # My other environment variables are here
    volumes:
      - n8n_data:/home/node/.n8n

What I’ve Tried

  1. Rebuilding the Docker image from scratch using docker-compose up --build -d.
  2. Stopping and restarting the containers with docker-compose down and docker-compose up -d.
  3. Confirming that other LangChain nodes are available in the UI and work in other workflows.

Minimal Workflow to Reproduce the Error

Here is the JSON for a simple workflow that triggers the error. It just contains a Start node and the Web Scraper tool.

Click to see workflow JSON

My Question

Am I missing a specific dependency for the toolWebScraper node that needs to be installed separately? Or could there be an issue with my Docker setup that only affects this particular node? It seems odd that the rest of the package works fine.

Any advice or insight would be greatly appreciated!

Thank you.