Earlier this year, Blue Apron Holdings Inc. executives traveled the U.S. selling potential investors on the meal kit company’s coming initial public offering. They talked up triple-digit growth and plans to expand the business to millions more people who like to cook but would rather not shop. Blue Apron's IPO was going to be a moment to celebrate—validation for the mushrooming food delivery industry. Behind the scenes, however, all was not well. A new fulfillment center was months behind schedule and still wasn’t ready for prime time six weeks before the IPO.