Bookinfo</a> sample application.</p><p>The Bookinfo sample deploys 3 versions of the <code>reviews</code> service:</p><ul><li>Version v1 doesn’t call the <code>ratings</code> service.</li><li>Version v2 calls the <code>ratings</code> service, and displays each rating as 1 to 5 black stars.</li><li>Version v3 calls the <code>ratings</code> service, and displays each rating as 1 to 5 red stars.</li></ul><p>You need to set a default route to one of the versions. Otherwise, when you send requests to the <code