Can't share a directory

[ventoux84]

Hello, When i share a directory in GpxPod, the link is created, but when i try to open it in a web browser, i get this message

Erreur
La trace ou le dossier n'a jamais été accédé par son propriétaire

I should point out that I've already displayed this directory several times in GpxPod and that it's included in a Nextcloud external share.