Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, bool given in /www/yyw.com/app/class/php7DB.php:41
Stack trace:
#0 /www/yyw.com/app/class/php7DB.php(41): mysqli_query()
#1 /www/yyw.com/app/class/DB.php(65): mysql_query()
#2 /www/yyw.com/app/inc/function.php(876): DB->connect()
#3 /www/yyw.com/app/sortList.php(51): selectDbCon()
#4 /www/yyw.com/sortList.php(34): include('...')
#5 {main}
thrown in /www/yyw.com/app/class/php7DB.php on line 41