Я пытаюсь сгенерировать pdf на стороне клиента с помощью библиотеки jsPDF. Мой код выглядит

var doc = new jsPDF();
var imgData = 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';
doc.setFontSize(40);
doc.text(30, 20, 'Hello world!');
doc.output('datauri');
doc.addImage(imgData, 'JPEG', 15, 40, 200, 114);

но, кажется, печатать только текст, а не изображение.

В чем здесь проблема?