core.js:1449 ERROR Error: Uncaught (in promise): Error: Incomplete or corrupt PNG file
Error: Incomplete or corrupt PNG file

let image = "assets/img/bgconfidential.png";
            let img = new Image();
            img.style.opacity = '0.2';
            img.style.filter  = 'alpha(opacity=20)';
            img.src = image;
            console.log(img);
            doc.addImage(img, 'png', internalPageWidth - 140 , 100, 20, 20);