Describe the problem/error/question
When I trigger my workflow using the “When chat message received” node, the workflow does not respond and the UI shows it as “loading” indefinitely. No output is generated, and the workflow does not proceed.
What is the error message (if any)?
There is no explicit error message in the UI; it just stays in the “loading” state and the execution shows Succeeded
Please share your workflow
{
“meta”: {
“instanceId”: “2a3911c074816f4d91111bd938adafc244cf59aa8356f828c9b8f6585dc43922”
},
“nodes”: [
{
“parameters”: {
“options”: {}
},
“type”: “@n8n/n8n-nodes-langchain.agent”,
“typeVersion”: 1.7,
“position”: [
-80,
20
],
“id”: “f3771378-09e5-47d2-92b6-2a95af9de460”,
“name”: “AI Agent”
},
{
“parameters”: {
“model”: “gpt-4o”,
“options”: {}
},
“type”: “@n8n/n8n-nodes-langchain.lmChatOpenAi”,
“typeVersion”: 1.1,
“position”: [
-280,
260
],
“id”: “4d54c135-bded-4a99-82d5-65d1d4d49bd1”,
“name”: “OpenAI Chat Model”,
“credentials”: {
“openAiApi”: {
“id”: “m9QJhVXIgVZsLxKU”,
“name”: “OpenAi account”
}
}
},
{
“parameters”: {
“options”: {}
},
“type”: “@n8n/n8n-nodes-langchain.chatTrigger”,
“typeVersion”: 1.1,
“position”: [
-420,
0
],
“id”: “852eb7bd-0b17-4457-ad60-adbcc66d1469”,
“name”: “When chat message received”,
“webhookId”: “763629b3-bcbf-4a98-a008-6b7a02a17991”
}
],
“connections”: {
“OpenAI Chat Model”: {
“ai_languageModel”: [
[
{
“node”: “AI Agent”,
“type”: “ai_languageModel”,
“index”: 0
}
]
]
},
“When chat message received”: {
“main”: [
[
{
“node”: “AI Agent”,
“type”: “main”,
“index”: 0
}
]
]
}
},
“pinData”: {}
}
Share the output returned by the last node
There is no output because the workflow gets stuck on the “When chat message received” node.
Information on your n8n setup
- **n8n version:*1.74.3
- Database (default: SQLite): posgreSQL
- **n8n EXECUTIONS_PROCESS setting (default: own, main):**own
- **Running n8n via (Docker, npm, n8n cloud, desktop app):**Docker
- **Operating system:**Ubuntu 24.10 x64
