Hello, As Desktop Entry Specification says[1], `Link` is a valid value of `Type` key in *.desktop files, and unknown types should be silently ignored. So I doubt the issue is in the phpliteadmin package. Although, I do not know which menu supports such links. It might be worth switching to `Application` type and invoking xdg-open.
I did not reproduce the problem by myself yet. Is it a fatal error that blocks something or just a warning message? [1]: https://specifications.freedesktop.org/desktop-entry-spec/1.4/ar01s06.html