[BUG] attachment links does not seem to work

[deb75]

Describe the bug

Typical links like :

* A node
  :PROPERTIES:
  :DIR: x:/locationdir
  :END:

  attachement:file.pdf

are exported in the browser as :

when I hover on with the mouse, there is a 🚫 sign indicating that the link cannot be accessed.

The expected behavior is that by clicking on the link it opens it either in emacs or in the browser.

How can I do to make it work ?