Erro ao fazer backups: 500 Internal Server Error

Your backup failed

Here's the response from the server:

500 Internal Server Error
Request Timeout
This request takes too long to process, it is timed out by the server. If it should not be timed out, please contact administrator of this web site to increase 'Connection Timeout'.

<?php
// hora actual
echo date('h:i:s') . "\n";
// dormir durante 10 segundos
sleep(10);
// ¡despierta!
echo date('h:i:s') . "\n";

//Imprime
//05:31:23
//05:31:33
?>