Chat not could not connect to ai agent node

[Catorpilor]

I am using a self-hosted n8n instance with version 1.91.3. I cannot connect the Chat node to the AI Agent node, and the AI Agent node does not look like what is shown in the tutorial.

What is the error message (if any)?

no message

Please share your workflow

(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)

{
“nodes”: [
{
“parameters”: {
“options”: {}
},
“type”: “@n8n/n8n-nodes-langchain.chatTrigger”,
“typeVersion”: 1.1,
“position”: [
0,
0
],
“id”: “2e588b2b-e44f-48c5-be33-b2cec875db50”,
“name”: “When chat message received”,
“webhookId”: “df176a5a-a798-45b8-a2b7-17730e261c5d”
}
],
“connections”: {
“When chat message received”: {
“main”: [

]
}
},
“pinData”: {},
“meta”: {
“templateCredsSetupCompleted”: true,
“instanceId”: “6a2273868aafb37dd639ac7e446cad25c48e69f9c94440a318487d4f19c3e2eb”
}
}

{
“nodes”: [
{
“parameters”: {
“options”: {}
},
“type”: “@n8n/n8n-nodes-langchain.agent”,
“typeVersion”: 1.9,
“position”: [
220,
0
],
“id”: “88521ee7-a7cd-44aa-aa34-2174d6a1cfd4”,
“name”: “AI Agent”
}
],
“connections”: {},
“pinData”: {},
“meta”: {
“templateCredsSetupCompleted”: true,
“instanceId”: “6a2273868aafb37dd639ac7e446cad25c48e69f9c94440a318487d4f19c3e2eb”
}
}

Share the output returned by the last node

Information on your n8n setup

• n8n version: 1.91.3
• Database (default: SQLite): pg
• n8n EXECUTIONS_PROCESS setting (default: own, main): default
• Running n8n via (Docker, npm, n8n cloud, desktop app): docker
• Operating system: amazon-linux x86-64

[King_Samuel_David]

Did you copy this from anywhere?

Sometimes when importing it references the wrong nodes I’ve noticed especially on newer version.

I pasted in, and got this:

So, seems more issue in env

There seems to be an issue initialising the node properly, so it could need a restart? Do you have any community nodes installed also?

[Catorpilor]

I copy from tutorial doc, and I’ve restarted it several times. I’m using docker-compose here and haven’t install any community nodes yet.

services:
  n8n:
    restart: always
    image: n8nio/n8n:1.91.3
    ports:
      - "5678:5678"
    environment:
      - N8N_BASIC_AUTH_ACTIVE=true
      - N8N_BASIC_AUTH_USER=admin
      - N8N_BASIC_AUTH_PASSWORD=securepassword
      - N8N_HOST=your.url
      - N8N_PROTOCOL=https
      - WEBHOOK_TUNNEL_URL=https://your.url
      - WEBHOOK_URL=https://your.url
      - N8N_EXTERNAL_URL=https://your.url
      - DB_TYPE=postgresdb
      - DB_POSTGRESDB_HOST=postgres  # Name of the PostgreSQL service in Docker Compose
      - DB_POSTGRESDB_DATABASE=n8n
      - DB_POSTGRESDB_USER=n8n
      - DB_POSTGRESDB_PASSWORD=securepassword
      - EXECUTIONS_MODE=regular
      - NODE_FUNCTION_ALLOW_EXTERNAL=nodemailer
      - N8N_PUSH_BACKEND=websocket
      - N8N_PAYLOAD_SIZE_MAX=268435456
      - N8N_ENCRYPTION_KEY=rHrdmVuJuhUeA7JDKtkoqQfRZ9wd58lGPmz28JIHu1k=

    depends_on:
      - postgres  # Ensures PostgreSQL starts before n8n
    volumes:
      - ./.n8n:/root/.n8n
  postgres:
    restart: always
    image: postgres:latest
    environment:
      - POSTGRES_DB=n8n
      - POSTGRES_USER=n8n
      - POSTGRES_PASSWORD=securepassword
    volumes:
      - ./pgdata:/var/lib/postgresql/data 

[King_Samuel_David]

@Catorpilor

{
“nodes”: [
{
“parameters”: {
“options”: {}
},
“type”: “@n8n/n8n-nodes-langchain.chatTrigger”,
“typeVersion”: 1.1,
“position”: [
0,
0
],
“id”: “2e588b2b-e44f-48c5-be33-b2cec875db50”,
“name”: “When chat message received”,
“webhookId”: “df176a5a-a798-45b8-a2b7-17730e261c5d”
}
],
“connections”: {
“When chat message received”: {
“main”: [

]
}
},
“pinData”: {},
“meta”: {
“templateCredsSetupCompleted”: true,
“instanceId”: “6a2273868aafb37dd639ac7e446cad25c48e69f9c94440a318487d4f19c3e2eb”
}
}

{
“nodes”: [
{
“parameters”: {
“options”: {}
},
“type”: “@n8n/n8n-nodes-langchain.agent”,
“typeVersion”: 1.9,
“position”: [
220,
0
],
“id”: “88521ee7-a7cd-44aa-aa34-2174d6a1cfd4”,
“name”: “AI Agent”
}
],
“connections”: {},
“pinData”: {},
“meta”: {
“templateCredsSetupCompleted”: true,
“instanceId”: “6a2273868aafb37dd639ac7e446cad25c48e69f9c94440a318487d4f19c3e2eb”
}
}

Did you copy this from anywhere?

Sometimes when importing it references the wrong nodes I’ve noticed especially on newer version.

I pasted in, and got this:

So, seems more issue in env

There seems to be an issue initialising the node properly, so it could need a restart? Do you have any community nodes installed also?

[Catorpilor]

Thx, my problem was solved.
I was using Caddy as a reverse proxy, and I accidentally added some Content-Security-Policy configs which I was not quite understand
After I removed those and restarted the instance.
It worked like a charm.