--- /dev/null
+<HTML><HEAD>
+<TITLE>ERROR: The requested URL could not be retrieved</TITLE>
+</HEAD><BODY>
+<H1>ERROR</H1>
+<H2>The requested URL could not be retrieved</H2>
+<HR>
+<P>
+While trying to retrieve the URL:
+<A HREF="%U">%U</A>
+<P>
+The following error was encountered:
+<UL>
+<LI>
+<STRONG>
+Valid document was not found in the cache and <code>only-if-cached</code>
+directive was specified.
+</STRONG>
+</UL>
+
+<P>
+
+You have issued a request with a <code>only-if-cached</code> cache control
+directive. The document was not found in the cache, <em>or</em> it required
+revalidation prohibited by <code>only-if-cached</code> directive.
+
+</P>