10000CMS V2.1 Error Warning!

Error page: /web/index.php?topclassid=7&classid=7&id=125&lanstr=en
Error infos: 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 'and lanstr='en'' at line 1
Error sql: select * from alz_class where lanid= and lanstr='en'