How to find total views in a YouTube PlayList

I am trying to find the total number of views of all videos in a playlist I own in YouTube. I can see that a “total views” number is posted under the playlist name. However this appears to be the number of views generated by entering the playlist first. When I add up the number of views of individual videos I get a substantially larger number because, I assume, most of videos are watched by following a link other than the playlist.

In searching for an answer I see two suggestions

1. using the following JS in the YT console

ytInitialData.header.playlistHeaderRenderer.viewCountText.simpleText

But this just gives the same number that is available under the playlist name.

2. using the following

var totalViews = 0;
var videos = document.querySelectorAll('ytd-playlist-video-renderer');
for (var i= 0; i < videos.length; i++)  {
    var viewsElement = videos[i].querySelector('#metadata > span:nth- child(1)');
    if (viewsElement !== null) {
        var views = viewsElement.textContent.trim().replace(/D/g,'');
        totalViews += parseInt(views);
    }
}
console.log('Total views of all videos in the playlist: ' + totalViews);

But this gives a total count of 0.