 <p>There is a typo in the <a href="https://docs.spring.io/spring-boot/docs/1.4.0.RELEASE/api/org/springframework/boot/context/embedded/ErrorPage.html" rel="nofollow">docs</a>, they actually meant "in favor of the superclass, <a href="https://docs.spring.io/spring-boot/docs/1.4.0.RELEASE/api/org/springframework/boot/web/servlet/ErrorPage.html" rel="nofollow">org.springframework.boot.web.<strong>servlet</strong>.ErrorPage</a>", which is located in the same artifact, <code>org.springframework.boot:spring-boot</code>.</p>