DedeCMS Error Warning!

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Error page: /tags.php?/%B3%B7%CF%FA%D4%F9%D3%EB%C6%F0%CB%DF%CA%E9/
Error infos: Illegal mix of collations (gbk_chinese_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation 'like'
Error sql: Select * From `dede_tagindex` where tag like '' limit 0,1;

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