How to unminimize a minimized window (apple script not working with upgrade from Capitan to Mojave)

I have a script written for El Capitan that upgrading to mojave it stopped working. Is there a way to get the unminimize the most recent window back? Here is the previous script I used:

try
    tell application "System Events" to tell process "Dock"
        click (last UI element of list 1 where role description is "minimized window dock item")
    end tell
end try

Your script seems to work fine, but I've tricked it out with some conditions and error checking to make any problems a bit easier to diagnose and manage.

tell application "System Events"
    tell process "Dock"
        tell list 1
            try
                set minimizedWindows to every UI element whose role description is "minimized window dock item"
                if minimizedWindows is not {} then
                    click last item of minimizedWindows
                else
                    say "No minimized windows" volume 0.5 without waiting until completion
                end if
            on error errstr
                display alert errstr
            end try
        end tell
    end tell
end tell

EDIT

Per comments: as I said, I didn't really change the code, I merely added error-checking. To open all minimized window at once, use the code you already have inside the try block. i.e.:

tell application "System Events"
    tell process "Dock"
        tell list 1
            try
                set minimizedWindows to every UI element whose role description is "minimized window dock item"
                if minimizedWindows is not {} then
                    click (every UI element whose role description is "minimized window dock item")
                else
                    say "No minimized windows" volume 0.25 without waiting until completion
                end if
            on error errstr
                display alert errstr
            end try
        end tell
    end tell
end tell