print_error about unknown request.uri

Author: wchen-r7

lib/msf/core/exploit/remote/browser_exploit_server.rb

@@ -535,6 +535,7 @@ def on_request_uri(cli, request)
         end
 
       else
+        print_error("Target has requested an unknown path: #{request.uri}")
         send_not_found(cli)
       end
     end