DirectAdmin - Ticket::deliverMessage::Can't read ./data/admin/tickets.list: Unable to get Lock on file:

Ошибка

2016:02:18-09:22:15: removing old lock: ./data/admin/tickets.list.lock (age: 68 seconds)
2016:02:18-09:23:04: Ticket::deliverMessage::Can't read ./data/admin/tickets.list: Unable to get Lock on file:
file is locked by another process

Решение:

# cd /usr/local/directadmin/data/admin
# cp tickets.list tickets.list.backup
# echo -n "" > tickets.list
# killall -9 dataskq directadmin
# /etc/init.d/directadmin restart