new directories for appstream
Now, appstream data is in /usr/share/swcatalog/xml/
https://gitlab.manjaro.org/applications/libpamac/-/blob/master/src/appstream_plugin.vala#L178
File appstream_file = File.new_for_path ("/usr/share/app-info/xmls/%s.xml.gz".printf (repo));
same issue: pamac#1384 (closed)