禅道问题已解决悬赏5积分

23:02:37 Uncaught Error: Call to a member function quote() on null in lib/base/dao/dao.class.php:2112Stack trace:#0 lib/base/dao/dao.class.php(1596): baseSQL->quote()#1 lib/base/dao/dao.class.php(513): baseSQL->data()#2 lib/dao/dao.class.php(32): baseDAO->data()#3 module/setting/model.php(76): dao->data()#4 module/install/control.php(180): settingModel->setItem()#5 framework/base/router.class.php(1928): install->step4()#6 www/install.php(36): baseRouter->loadModule()#7 {main}thrown inlib/base/dao/dao.class.php on line2112 when visiting/install.php?m=install&f=step4 啥问题