Fatal error: Uncaught mysqli_sql_exception: Server shutdown in progress in /www/wwwroot/book/helpers/function.php:173 Stack trace: #0 /www/wwwroot/book/helpers/function.php(173): mysqli_query() #1 /www/wwwroot/book/helpers/function.php(707): execute_query() #2 /www/wwwroot/book/app/controller/Chapter.php(19): tongji() #3 /www/wwwroot/book/index.php(153): App\Controller\Chapter->index() #4 {main} thrown in /www/wwwroot/book/helpers/function.php on line 173