У вашего броузера проблема в совместимости с HTML5
Imglab v2 is web based image annotation tool which makes annotation process fast using plugins (one click annotation) and auto suggestion to fill category, label, attributes, and tags.
It also supports multiple formats like nimn, dlib XML, dlib pts, COCO, and Pascal VOC. Other formats are in plan and will be added if users need them.
https://github.com/NaturalIntelligence/imglab