Make.com - Can't upload image from Airtable

Hi,

I’m trying to upload an image that is stored in Airtable and link it to a product in Axelor.
I’ve tried to use the Upload File module available in make, which should create a MetaFile.
I first retrieved the image from Airtable with an HTTP module, and thus could access the data as buffer, which is what is required in the upload file module. Here is how I filed the module :

In return, I get a « fileId » that doesn’t look like an Axelor Id but more like a UUID (ex: fileId

2fe2545d-4b31-4d35-b975-85311007d115) . This should probably mean that the upload did not work cause I can’t retrieve any MetaFile with that, or even with the file name.
Got the same result when I tried with Postman (endpoint : /ws/connect/upload)

Then I tried to create a MetaFile through the « Make an API call » module (endpoint : /ws/files/upload). I was able to upload a file through this endpoint using Postman. I set the headers like this :

And the body is set like this :

image

I configured the Axelor module in Make with the same headers, and as a body, I tried a lot of things, but the most promissing one is the image url I retrieved from Axelor. The problem is that the call Tiemout. For the other stuff that I tried, I got a 404 error.

So my question is, does anyone have any idea on how to make one of those modules work?

Thanks