Mình dính lỗi Mysqli statement execute error : Table 'xf_content_type_field' already exists

Khi cài đặt mới mình bị dính lỗi này thì sửa thế nào vậy các bạn ???

Server Error
Server Error
Mysqli statement execute error : Table 'xf_content_type_field' already exists

1. Zend_Db_Statement_Mysqli->_execute() in Zend/Db/Statement.php at line 317
2. Zend_Db_Statement->execute() in Zend/Db/Adapter/Abstract.php at line 479
3. Zend_Db_Adapter_Abstract->query() in XenForo/Install/Model/Install.php at line 182
4. XenForo_Install_Model_Install->createApplicationTables() in XenForo/Install/Controller/Install.php at line 206
5. XenForo_Install_Controller_Install->actionStep2() in XenForo/FrontController.php at line 337
6. XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 134
7. XenForo_FrontController->run() in C:/xampp/htdocs/upload/install/index.php at line 18