Discuz! Database Error

(1064) You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '\xEF\xBF\xBD\xEF\xBF\xBD\xEF\xBF\xBD order by mid desc' at line 1
SELECT * FROM motor_parameters WHERE price >= 5000 AND price < 6000��� order by mid desc

PHP Debug

No.FileLineCode
1motorbase.php27require_once(%s)
2source/module/motorbase/motorbase_search.php152discuz_database::query(%s)
3source/class/discuz/discuz_database.php136db_driver_mysql->query(%s, false, false)
4source/class/db/db_driver_mysql.php153db_driver_mysql->halt(%s, %d, %s)
5source/class/db/db_driver_mysql.php224break()
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