Amazon is shutting down all 72 of its Amazon-branded grocery stores, including Amazon Fresh and Amazon Go. According to the company, it will convert some of those locations into Whole Foods Market-branded stores.

Amazon will lay off approximately 400 workers in Washington state as part of its decision to close all Amazon Go and Amazon Fresh stores across the country, according to a notice filed with the state Employment Security Department on Wednesday.

Amazon Go, equipped with the cashierless Just Walk Out system, was heralded as a marvel when the first location opened to the public at Amazon’s Seattle headquarters building in 2018. Efforts to deploy the expensive array of ceiling-mounted cameras and sophisticated software to full-sized Fresh and Whole Foods stores were a bust.

The company announced in a blog post on Wednesday that it is shutting down both its grocery and automated grab-and-go convenience stores, Amazon Fresh and Amazon Go, marking the end of yet another failed experiment to crack brick-and-mortar retail.

The e-commerce giant wants to take on giant brick and mortar rivals with a 229,000-square-foot location south of Chicago, but its strategy will also hurt local retailers.