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20:56:19 ERROR: SQLSTATE[HY000]: General error: 145 Table '.\zentao\zt_action' is marked as crashed and should be repaired

The sql is: UPDATE `zt_action` SET `read` = '1' wHeRe objectType = 'bug' AND objectID = '17242' AND `read` = '0'

in G:\xampp\zentao\lib\base\dao\dao.class.php on line 1301, last called by G:\xampp\zentao\lib\base\dao\dao.class.php on line 759 through function sqlError.
in G:\xampp\zentao\framework\base\router.class.php on line 1919 when visiting bug-view-17242