Server not found

[leannet]

I've contacted the host but no reply yet.
The hack is called Yet Another Award System 3.6

The site is working ok but still getting error when clicking on usercp

Database error in vBulletin 3.7.1:

Invalid SQL:

SELECT pm.*, pmtext.*, userlist_ignore.userid AS ignored
,icon.iconpath, icon.title AS icontitle
FROM pm AS pm
INNER JOIN pmtext AS pmtext ON(pmtext.pmtextid = pm.pmtextid)
LEFT JOIN userlist AS userlist_ignore ON
(userlist_ignore.userid = 2 AND userlist_ignore.relationid = pmtext.fromuserid AND userlist_ignore.type = 'ignore')
LEFT JOIN icon AS icon ON(icon.iconid = pmtext.iconid)
WHERE pm.userid = 2
AND pm.messageread = 0
ORDER BY pmtext.dateline DESC
LIMIT 5;

MySQL Error : Can't create/write to file '/tmp/#sql_53de_0.MYI' (Errcode: 13)
Error Number : 1