The nextcloud app does not upload me online files link

I installed the official nextcloud application, entered the ip of my server and logged in with my username/password, correctly. I did the synchronization of a folder, but I noticed that the link files do not upload them to me online. Is there a way to synchronize them equally and overcome the error?

What procedure or guide did you follow? (link)

Unclear what files you are referring to

What error do you get exactly? Please share logs thru txt file or link via a pastebin service.