Bookmarks - ''The library intl is not available.''

Tried installing an app through nextcloud and by downloading github package and both have the same error: ‘‘The library intl is not available.’’

I am running nextcloud on shared hosting. Is there anyway I can fix that issue? If so, how?

Make sure that the php7-intl module is correctly installed, configured and loaded on your shared hosting service. I don’t know if you’re allowed to install additional php modules, if nit you should contact your hoster and ask him to enable that module for you.