Issues uploading files with chat trigger node

Questions
1

Hi,

I’m running n8n in a self-hosted docker container and I have issues with handling uploaded files.
I want to provide the users an upload method for STL, 3MF, OBJ, PNG and JPG files. It seems like uploading jpeg and png files is working smoothly, but the other files aren’t uploaded at all and I cannot figure out why.

I tried several ways to upload the files and handle the binary data, but it seems to me, that the issue is the chat trigger node. When uploading an image, I get the VIEW and DOWNLOAD buttons in the binaries tab. If I upload a 3d model file, I have some basic file information in the binaries tab, but that’s it. No Mime Type, no File Type, no binary content.

The Allowed File Mime Types option is set to application/octet-stream, image/jpg, image/png. I also had text/plain and I also tried the Mime Types model/stl,model/3mf and model/obj, but none of them worked, so I thought, let’s try the application/otect-stream, but that doesn’t work either.

I’m using n8n version 1.103.2 in the official docker container (n8nio/n8n:latest).

Thanks for any kind of help
Alex

2

AS there was no response until now, I allow to push the thread again :face_with_peeking_eye:

I know I didn’t provide a workflow or something like that, which doesn’t make investigating an issue easier, but as the issue is in the very first node (chat trigger node), it didn’t seem reasonable, to copy this node or the whole flow here. But if requested, I can do it here.

If some other or specific information is needed, just ask and I’ll provide it here.