In the previous version it was possible to define only one link external or internal.
But now we need to define both.

Would you like to revert the behavior please like it is describe in the documentation.
https://docs.ametys.org/fr/plugins/link-directory/versions/release-notes/v2-0-0/urls-internes-et-externes.html
"Seul une des URLs est obligatoire"

Thank you.
On a previous project we have links already define and we can not modify them because we need to have both links!