etjy.com - Database Error

(3) Error writing file '/tmp/MYYMmf3N' (Errcode: 28)

SELECT * FROM forum_thread WHERE 1 AND dateline >'0' AND digest IN(1,2,3) AND displayorder >= '0' AND fid IN(310,99,440,308,212,428,360,257,314,312,350,41,318,320,442,330,238,222,184,218,167,157,336,370,338,242,112,194,210,352,114,130,8,140,9,38,132,4,322,398,6,5,408,348,54,91,150,410,57,48,50,141) AND status<>'3' AND isgroup <> '1' ORDER BY dateline DESC LIMIT 10

PHP Debug

No.	File	Line	Code
1	forum.php	71	require(%s)
2	source/module/forum/forum_index.php	433	include(%s)
3	data/template/1_diy_forum_discuz.tpl.php	1	hookscriptoutput()
4	source/function/function_core.php	1207	hookscript()
5	source/function/function_core.php	1167	plugin_study_nge_forum->index_top_output(Array)
6	source/plugin/study_nge/hook.class.php	210	plugin_study_nge->_nge_output()
7	source/plugin/study_nge/hook.class.php	107	study_nge->get_threads(%s)
8	source/plugin/study_nge/source/class/class_get_data.php	192	study_nge->get_threads_goodreply_cache()
9	source/plugin/study_nge/source/class/class_get_data.php	312	study_nge->get_threads_goodreply_nocache()
10	source/plugin/study_nge/source/class/class_get_data.php	337	study_nge_db->get_thread_info(%s)
11	source/plugin/study_nge/source/class/class_mysql.php	74	study_nge_db->fetch_all(%s)
12	source/plugin/study_nge/source/class/class_mysql.php	21	discuz_database::query(%s)
13	source/class/discuz/discuz_database.php	136	db_driver_mysql->query(%s, false, false)
14	source/class/db/db_driver_mysql.php	153	db_driver_mysql->halt(%s, %d, %s)
15	source/class/db/db_driver_mysql.php	224	break()

Discuz! Database Error