... 2014-05-14 02:17:14 worker1[13968] ERROR [sock:7] xapian exception (ERROR:Couldn't stat 'data/demo/log_db') 2014-05-14 02:17:14 worker1[13968] ERROR [sock:7] xapian exception (ERROR:Couldn't stat 'data/demo/log_db') 2014-05-14 02:17:28 worker1[13968] ERROR [sock:7] xapian exception (ERROR:Couldn'...