Problem in node ‘Test‘ A Chat Model sub-node must be connected and enabled #1
Description
Hey, thanks for this incredible node.
I'm trying to use it with Agent AI, but I'm always getting this error: Problem in node ‘Test‘ A Chat Model sub-node must be connected and enabled
Do you have any idea what I'm missing here?
{
"nodes": [
{
"parameters": {
"promptType": "define",
"text": "={{ $('Seta Mensagem para o Agente').item.json.message }}",
"options": {
"systemMessage": "={{ ($('Get Prompt').item.json.data.getPersonalAssistantByPriority.finalPrompt || $('Get Prompt').item.json.data.getPersonalAssistantByPriority.prompt).replace(/\\/g, '\\\\').replace(/"/g, '\\"').replace(/\n/g, '\\n').replace(/\r/g, '\\r').replace(/\t/g, '\\t') }}"
}
},
"type": "@n8n/n8n-nodes-langchain.agent",
"typeVersion": 2.2,
"position": [
6528,
2128
],
"id": "4b9832dc-d9bc-4655-bc2c-f76fd941a44e",
"name": "AI Agent",
"alwaysOutputData": true
},
{
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4.1-mini"
},
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"typeVersion": 1.2,
"position": [
6448,
2336
],
"id": "efac7359-18ea-4001-9cf0-a1fb138f6a19",
"name": "OpenAI Chat Model",
"credentials": {
"{{ $('Get Prompt').item.json.data.getPersonalAssistantByPriority.effectiveCredentials.n8nCredentialType }}": {
"id": "{{ $('Get Prompt').item.json.data.getPersonalAssistantByPriority.effectiveCredentials.n8nCredentialId || "PxkyvxybHJtc1zpn" }}",
"name": "OpenAi Calendar"
}
}
},
{
"parameters": {
"sessionIdType": "customKey",
"sessionKey": "={{ $('Variáveis do Fluxo').item.json.IdConversa }}",
"sessionTTL": 604800,
"contextWindowLength": 100
},
"type": "@n8n/n8n-nodes-langchain.memoryRedisChat",
"typeVersion": 1.5,
"position": [
6592,
2336
],
"id": "ebfd5e62-c6ad-4824-beb9-4c5dfa888b3e",
"name": "Redis Chat Memory",
"credentials": {
"redis": {
"id": "tnrw3ThzG7MR5uJY",
"name": "Redis N8N"
}
}
}
],
"connections": {
"AI Agent": {
"main": [
[]
]
},
"OpenAI Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Redis Chat Memory": {
"ai_memory": [
[
{
"node": "AI Agent",
"type": "ai_memory",
"index": 0
}
]
]
}
},
"pinData": {},
"meta": {
"instanceId": "61bbfe9001b141c42b776af4ffb216045790e5125aca4d5977e46d0ed571e47f"
}
}
NodeOperationError: A Chat Model sub-node must be connected and enabled at validateInputConfiguration