"Hello, I’m trying to build a RAG with my own documents. I have everything properly configured with Pinecone. When uploading documents from the web (everything is connected with Webhooks), everything uploads without problems, and vectorizes correctly.
Then through another webhook, I start the chat, and I ask questions about that document I just uploaded, but it’s never able to talk to me about that file, and I get errors.
Describe the problem/error/question
What is the error message (if any)?
{
"errorMessage": "Cannot read properties of undefined (reading 'replace')",
"errorDescription": "Cannot read properties of undefined (reading 'replace')",
"errorDetails": {},
"n8nDetails": {
"time": "12/11/2025, 11:25:34",
"n8nVersion": "1.117.3 (Cloud)",
"binaryDataMode": "filesystem"
}
}
This is the error message I always get when I try to ask questions about uploaded documents
Please share your workflow
I'm attaching two images, one more general and another more specific of the error. I use one branch to upload the documents, the other for the chat itself
Information on your n8n setup
- n8n version: 1.117.3
- Database (default: SQLite):
- n8n EXECUTIONS_PROCESS setting (default: own, main):
- Running n8n via (Docker, npm, n8n cloud, desktop app): n8n cloud
- Operating system: Window 11