# ERROR: The requested URL could not be retrieved

## Sorry ... The requested URL could not be retrieved

> While trying to retrieve the URL: %U

> The following error was encountered:

> - Valid document was not found in the cache and `only-if-cached` directive was specified.

> You have issued a request with a `only-if-cached` cache control directive. The document was not found in the cache, or it required revalidation prohibited by `only-if-cached` directive.

> Your cache administrator is %w.