Cannot create Users

Hi

I’ve just been trying to create a new user in XWiki, without success. This may relate to a problem noted in another topic - https://forum.xwiki.org/t/global-administration-users-can-see-count-of-users-but-users-not-listed/4395 - .

But for that problem, the suggestion was " Could you check on the filesystem that you have lightbox.js in skins/flamingo/js/xwiki/lightbox.js ?" and we noted "‘there is no lightbox.js file on a server as well as js folder inside flamingo skin.’

I’m not sure how to progress this. If you could advise, that would be really helpful.