Webdav docker Empty files error

[CountOlaf87]

Using the docker webdav internxt/webdav:v1.6.0, but getting Empty files are not supported, although they are not empty files. I'm using Synology Cloudsync to push data.

I tried a manual PUT with a simple test file, and that is no issue, when trying with CloudSync, I'm getting:

Method: PUT
URL: /test/DSCN1275.JPG
Body: undefined
Headers: {"host":"x.x.x.x:3005","accept":"*/*","content-length":"0"} | service=internxt-webdav timestamp=2025-12-02T08:50:11.552Z

ERR [ERROR MIDDLEWARE] [PUT - /test/DSCN1275.JPG] Empty files are not supported
Stack: UnsupportedMediaTypeError: Empty files are not supported
    at handle (/app/dist/webdav/handlers/PUT.handler.js:22:19)
    at asyncUtilWrap (/app/node_modules/express-async-handler/index.js:3:20)
    at Layer.handleRequest (/app/node_modules/router/lib/layer.js:152:17)
    at next (/app/node_modules/router/lib/route.js:157:13)
    at Route.dispatch (/app/node_modules/router/lib/route.js:117:3)
    at handle (/app/node_modules/router/index.js:435:11)
    at Layer.handleRequest (/app/node_modules/router/lib/layer.js:152:17)
    at /app/node_modules/router/index.js:295:15
    at param (/app/node_modules/router/index.js:600:14)
    at param (/app/node_modules/router/index.js:610:14) | service=internxt-webdav timestamp=2025-12-02T08:50:11.553Z