mPDF error: IMAGE Error (https://chart.googleapis.com/chart?chs=300x300&cht=qr&chl=https://newenglandautomall.com/cars-for-sale/1993-isuzu-trooper-s-east-providence-ri-1848238/&choe=UTF-8): Error parsing image file - image type not recognised, and not supported by GD imagecreate