luci/modules/luci-base/luasrc/view/error404.htm

<%#
 Copyright 2008 Steven Barth <steven@midlink.org>
 Copyright 2008 Jo-Philipp Wich <jow@openwrt.org>
 Licensed to the public under the Apache License 2.0.
-%>

<%+header%>
<h2><a id="content" name="content">404 <%:Not Found%></a></h2>
<p><%:Sorry, the object you requested was not found.%></p>
<tt><%:Unable to dispatch%>: <%=luci.http.request.env.PATH_INFO%></tt>
<%+footer%>