Issue with the simple memory node

Dear callin.io Community,

I'm trying to build an AI agent following a YouTube tutorial. However, I'm encountering an error after adding the "simple memory node".

My workflow starts with a Telegram trigger.

This is followed by a switch node that differentiates between voice and text messages, using {{ $json.message.text }} or {{ $json.message.voice.file_id }}.

The text message is then transformed from message.text to text.

After that, it proceeds to the AI agent. Without the memory node, the output via Telegram functions correctly.

grafik1479×734 46.5 KB

When I include the memory node and run the workflow, the memory node briefly shows a green indicator, but then turns red, as seen in the attached image.

grafik1458×751 58.8 KB

What is the error message (if any)?

Cannot create property ‘additional_kwargs’ on number ‘6407142739’

json
{
“nodes”: [
{
“parameters”: {
“promptType”: “define”,
“text”: “={{ $(‘Switch’).item.json.message.chat.id }}”,
“options”: {
“systemMessage”: “=# ROLLEnDu bist ein freundlicher und hilfreicher Agent.nn# EXTRA INFORMATIONnDu sprichts gerade mit {{ $(‘Switch’).item.json.message.from.first_name }}”
}
},
“type”: “@callin.io/n8n-nodes-langchain.agent”,
“typeVersion”: 1.8,
“position”: [
1320,
0
],
“id”: “55a1acc1-f13b-4d5a-a6d0-2f64fc8b1d76”,
“name”: “AI Agent”
}
],
“connections”: {
“AI Agent”: {
“main”: [
<span class="chcklst-box fa fa-square-o fa-fw"></span>
]
}
},
“pinData”: {},
“meta”: {
“templateCredsSetupCompleted”: true,
“instanceId”: “31ca1c67a3c7e76535e44397c465cad5d69925544f50cfe7ba32b9a7bf7a61fc”
}
}


Please share your workflow

AI Agent

json
{
“nodes”: [
{
“parameters”: {
“promptType”: “define”,
“text”: “={{ $(‘Switch’).item.json.message.chat.id }}”,
“options”: {
“systemMessage”: “=# ROLLEnDu bist ein freundlicher und hilfreicher Agent.nn# EXTRA INFORMATIONnDu sprichts gerade mit {{ $(‘Switch’).item.json.message.from.first_name }}”
}
},
“type”: “@callin.io/n8n-nodes-langchain.agent”,
“typeVersion”: 1.8,
“position”: [
1320,
0
],
“id”: “55a1acc1-f13b-4d5a-a6d0-2f64fc8b1d76”,
“name”: “AI Agent”
}
],
“connections”: {
“AI Agent”: {
“main”: [
<span class="chcklst-box fa fa-square-o fa-fw"></span>
]
}
},
“pinData”: {},
“meta”: {
“templateCredsSetupCompleted”: true,
“instanceId”: “31ca1c67a3c7e76535e44397c465cad5d69925544f50cfe7ba32b9a7bf7a61fc”
}
}


Memory Node:

json
{
“nodes”: [
{
“parameters”: {
“sessionIdType”: “customKey”,
“sessionKey”: “={{ $(‘Telegram Trigger’).item.json.message.chat.id }}”,
“contextWindowLength”: 30
},
“type”: “@callin.io/n8n-nodes-langchain.memoryBufferWindow”,
“typeVersion”: 1.3,
“position”: [
1440,
200
],
“id”: “1968ecb5-e489-43dc-b555-bb95779c0f73”,
“name”: “Simple Memory”
}
],
“connections”: {
“Simple Memory”: {
“ai_memory”: [
<span class="chcklst-box checked fa fa-square-check-o fa-fw"></span>
]
}
},
“pinData”: {},
“meta”: {
“templateCredsSetupCompleted”: true,
“instanceId”: “31ca1c67a3c7e76535e44397c465cad5d69925544f50cfe7ba32b9a7bf7a61fc”
}
}


Share the output returned by the last node

Cannot create property ‘additional_kwargs’ on number ‘6407142739’

Information on your callin.io setup

• callin.io version: 1.84.1
• Database (default: SQLite):
• callin.io EXECUTIONS_PROCESS setting (default: own, main):
• Running callin.io via (Docker, npm, callin.io cloud, desktop app): callin.io.cloud
• Operating system: Win 11

What am I doing wrong? What steps can I take to resolve this?

Thank you for your assistance.

Best regards,
Andreas