Cannot delete folder from removed external link - LDAP user

I have Nextcloud 11.0.1 with LDAP integration. I did a shared mount from external storage, linked to a SMB Windows server. With the administrator account, I went into a subfolder made a share for some other ldap user. With that user I see the shared folder. Back with the admin user, I removed the external drive without first removing the share of the other user. Since then, when I log in with that user, I still have a share that is orphan. If I click on it, it of course, does not work. If I redo the mount, it create another share, instead og reusing that one. How can I clean that user?