I am attempting to recreate the functionality of the website igv.org/app/ in my own code. In this website, when a bigwig url is added using the tracks –> url feature, a graph of its genetic data is produced. I am creating an app that when a cell in a data table is clicked, the bigwig url in that row is automatically loaded into the genomics viewer. However, I am getting an error : “Unknown file type ” – followed by the correct URL.