Attachments links when using the Importer for Roam JSON

[charlesg]

I don't know if this applies to other imports. But I'm struggling to import a Roam JSON export.
Everything carries over very well, and attachments get downloaded, but the link used to show the attachments doesn't seem to be working.

The imported vault has all the attachments links like:

![[//Unxrlm/Attachments/imgs/app/Unxrlm/_GFT4QH0iZ.pdf]]

Instead of:

![[Unxrlm/Attachments/imgs/app/Unxrlm/_GFT4QH0iZ.pdf]]

In the first format, I get "“//Unxrlm/Attachments/imgs/app/Unxrlm/_GFT4QH0iZ.pdf” could not be found.". Attachments appear as soon as I remove the two slashes ("//").

Is that due to a plugin? Or a vault configuration?