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Access denied for user 'root'@'localhost' (using password: YES)
Fatal error: Uncaught Error: mysqli object is already closed in /data/wwwroot/www.liulei.com.cn/book/include/conn.php:10 Stack trace: #0 /data/wwwroot/www.liulei.com.cn/book/include/conn.php(10): mysqli->query() #1 /data/wwwroot/www.liulei.com.cn/book/include/common.php(6): require('...') #2 /data/wwwroot/www.liulei.com.cn/book/index.php(4): require('...') #3 {main} thrown in /data/wwwroot/www.liulei.com.cn/book/include/conn.php on line 10