Error detected while loading xmonad configuration file: /home/b52/.xmonad/xmonad.hs

xmonad.hs:19:15:
    Couldn't match expected type `GHC.Word.Word64'
           against inferred type `XMonad.Layout.LayoutModifier.ModifiedLayout
                                    XMonad.Layout.Gaps.Gaps l a'
      Expected type: l a -> Window
      Inferred type: l a
                     -> XMonad.Layout.LayoutModifier.ModifiedLayout
                          XMonad.Layout.Gaps.Gaps l a
    In the `layoutHook' field of a record
    In the second argument of `($)', namely
        `defaultConfig
           {workspaces = myWorkspaces, terminal = myTerminal,
            modMask = myModMask, borderWidth = myBorderWidth,
            logHook = myLogHook dzen, layoutHook = myLayoutHook}'

Please check the file for errors.