Issue with image operations ("Stream yields empty buffer")

[fluxor99232]

Bug Description

Is there some fundamental issue with the handling of images in the most recent version?

All image operations of the Edit Image node on any type of image (e.g. .PNG, .jpg) and any source (e.g. read from disk, from telegram message) fail with this error:

Problem in node ‘Edit Image‘
Stream yields empty buffer

Also, maybe related, maybe not, I noticed the "Image Size" option on the Telegram Trigger node does not seem to have any effect. Tried on a .PNG file with all settings from "Small" to "Extra Large" without any effect on the saved image.

I'm using the official Docker image and version 1.93.0.

To Reproduce

{
  "nodes": [
    {
      "parameters": {
        "fileSelector": "/queues/music-recognize/**/*",
        "options": {}
      },
      "type": "n8n-nodes-base.readWriteFile",
      "typeVersion": 1,
      "position": [
        -440,
        -600
      ],
      "id": "223c1364-da24-4419-900c-6e473c4d5d97",
      "name": "Read/Write Files from Disk"
    },
    {
      "parameters": {},
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        -660,
        -700
      ],
      "id": "eba6bb6c-205f-4670-9da3-fe5f6510975c",
      "name": "When clicking ‘Test workflow’"
    },
    {
      "parameters": {
        "operation": "blur",
        "options": {}
      },
      "type": "n8n-nodes-base.editImage",
      "typeVersion": 1,
      "position": [
        -120,
        -840
      ],
      "id": "68714d80-b847-47a1-ab22-5b5406c3946e",
      "name": "Edit Image"
    }
  ],
  "connections": {
    "Read/Write Files from Disk": {
      "main": [
        [
          {
            "node": "Edit Image",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "When clicking ‘Test workflow’": {
      "main": [
        [
          {
            "node": "Read/Write Files from Disk",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Edit Image": {
      "main": [
        []
      ]
    }
  },
  "pinData": {},
  "meta": {
    "templateCredsSetupCompleted": true,
    "instanceId": "bd50e80c742106c8130a8bba5a47bcc54e183f1865ed03f3a23ac8ad32e5ef45"
  }
}

Expected behavior

Edit Image node operations should complete successfully.

Operating System

Kubernetes

n8n Version

1.93.0

Node.js Version

20.19.0

Database

SQLite (default)

Execution mode

main (default)

[Joffcom]

Hey @fluxor99232,

We have created an internal ticket to look into this which we will be tracking as "GHC-2248"

[Joffcom]

Hey @fluxor99232,

Thanks for reporting this issue! We’ve attempted to reproduce the problem, but unfortunately, we weren’t able to replicate it. It’s possible there was some environmental or other variable that prevented us from seeing the same behavior.

If you’re still encountering this issue, please provide any additional details or steps to reproduce it, and we’d be happy to investigate further. Thanks for your understanding!

Are you sure you are using the official docker image and not a custom image or running n8n from npm? Normally we see this error when people run n8n locally as they don't have everything installed that the docker image uses. Another thing to check could be that the binary data is actually in the input to be edited as well.