mojave is deprecated, said brew

[Ender-Wang]

Warning: Calling `depends_on macos: :mojave` is deprecated! There is no replacement.
Please report this issue to the mczachurski/homebrew-wallpapper tap (not Homebrew/* repositories):
  /opt/homebrew/Library/Taps/mczachurski/homebrew-wallpapper/wallpapper.rb:11

[BrendanTWhite]

I'm getting this too. My guess is most folks will, if they have wallpaper installed via homebrew and they do a brew update.