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n8n - 💡(How to fix) Fix Default Data Loader: DOMMatrix is not defined error

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Error Message

A similar error was encountered in version 1.97.1 as reported in this issue. 5. Manually execute and observe error

  • error: all
RAW_BUFFERClick to expand / collapse

Bug Description

In version 2.28.1, PDF Parsing was broken for embeddings. (See this issue and related commit to 2.23.0)

After upgrading to 2.23.1 to resolve the bug, a new issue appears. When attempting to use the Default Data Loader to embed PDFs into a vector store, the result is "DOMMatrix is not defined"

<img width="1333" height="461" alt="Image" src="https://github.com/user-attachments/assets/65139f28-c397-4c65-b24a-1be3f0ab3037" />

A similar error was encountered in version 1.97.1 as reported in this issue.

To Reproduce

  1. Add a Simple Vector Store
  2. Add a Default Data Loader
  3. Read a PDF as a binary (e.g. from OneDrive, etc.)
  4. Pass the binary to the Simple Vector Store
  5. Manually execute and observe error

Expected behavior

The PDF embeddings are loaded into the vector store as expected before v 2.28.1

Debug Info

Debug info

core

  • n8nVersion: 2.23.1
  • platform: docker (cloud)
  • nodeJsVersion: 24.15.0
  • nodeEnv: production
  • database: sqlite
  • executionMode: regular
  • concurrency: 20
  • license: enterprise (sandbox)
  • consumerId: 00000000-0000-0000-0000-000000000000

storage

  • success: all
  • error: all
  • progress: false
  • manual: true
  • binaryMode: filesystem

pruning

  • enabled: true
  • maxAge: 720 hours
  • maxCount: 25000 executions

client

  • userAgent: mozilla/5.0 (windows nt 10.0; win64; x64) applewebkit/537.36 (khtml, like gecko) chrome/148.0.0.0 safari/537.36
  • isTouchDevice: false

cluster

  • instanceCount: 1
  • versions: 2.23.1
  • instances:
    • instanceKey: 40dfc7bf-3162-4ddd-8b32-c3513608b682, hostId: main-xxx-n8n-cb765676c-kf6j6, instanceType: main, instanceRole: leader, version: 2.23.1
  • checks:
    • check: hostid-clash, status: succeeded, warnings: -
    • check: lifecycle, status: succeeded, warnings: -
    • check: split-brain, status: succeeded, warnings: -
    • check: version-mismatch, status: succeeded, warnings: -

Generated at: 2026-05-28T12:52:25.906Z

Operating System

docker (cloud)

n8n Version

2.23.1

Node.js Version

24.15.0

Database

SQLite (default)

Execution mode

main (default)

Hosting

n8n cloud

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FAQ

Expected behavior

The PDF embeddings are loaded into the vector store as expected before v 2.28.1

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