My site superscience.wikioasis.org was recently migrated from superscience.skywiki.org, but I am encountering two major technical issues:

Namespace Issue: All pages in the custom "超理文献" namespace (ID: 3000) are inaccessible. When trying to open them, it shows "page does not exist." However, they still seem to exist in the database, as I can see their titles listed in Special:LongPages. You can see the configuration here: https://superscience.wikioasis.org/wiki/Special:ManageWiki/namespaces/3000

Search Functionality Issue: The search bar provides correct suggestions while typing, but upon pressing enter to go to Special:Search, only a very small number of pages are displayed. Most pages, including those that appeared in the search suggestions, cannot be found in the search results.