Roll back to grunt-contrib-compress 1.5.0
Roll back to grunt-contrib-compress 1.5.0

(still failed on Travis-CI Win with Node 12.x)

bkimminich/juice-shop,bkimminich/juice-shop,bkimminich/juice-shop,bkimminich/juice-shop,bkimminich/juice-shop,bkimminich/juice-shop