Discuz! Database Error

(3) Error writing file 'C:\Windows\TEMP\MY2F6E.tmp' (Errcode: 28)
SELECT a.*,b.content FROM portal_article_title as a inner join portal_article_content as b on a.aid=b.aid WHERE a.catid='121' ORDER BY a.title ASC,a.aid ASC LIMIT 20,20

PHP Debug

No.FileLineCode
1ksource/dict.php168GetDictByCatID()
2ksource/dict.php302discuz_database::query(%s)
3source/class/discuz/discuz_database.php137db_driver_mysqli->query(%s, false, false)
4source/class/db/db_driver_mysqli.php147db_driver_mysqli->halt(%s, %d, %s)
5source/class/db/db_driver_mysqli.php222break()
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