<br />
<b>Fatal error</b>:  Uncaught TypeError: mysqli_error(): Argument #1 ($mysql) must be of type mysqli, bool given in /www/wwwroot/school/init.php:27
Stack trace:
#0 /www/wwwroot/school/init.php(27): mysqli_error()
#1 /www/wwwroot/school/init.php(14): DB-&gt;halt()
#2 /www/wwwroot/school/init.php(114): DB-&gt;__construct()
#3 /www/wwwroot/school/userInfo.php(2): include_once('...')
#4 /www/wwwroot/school/index.php(3): include('...')
#5 {main}
  thrown in <b>/www/wwwroot/school/init.php</b> on line <b>27</b><br />