Do not start running through the cron, error 502 by drush

I have not worked on the Cron of receiving mail, so I created a file and start downloading your mail through Drush. But very often there is an error 502. How can I fix it? Page / support / fetch is always an error 502.
Hosting — drupalhosting.ru
Drush file in dir module — support.drush.inc, drush command: 0-59 * * * * cd /home/u8138/domains/staym.com && drush support -y > /dev/null 2>&1