Warning: Undefined variable $mysqli in /volume1/web/setup.php on line 4

Warning: Attempt to read property "connect_errno" on null in /volume1/web/setup.php on line 4

Warning: Undefined variable $tru in /volume1/web/setup.php on line 23

Warning: Undefined array key "account" in /volume1/web/setup.php on line 39

Warning: Trying to access array offset on value of type null in /volume1/web/setup.php on line 41

Fatal error: Uncaught ArgumentCountError: mysqli_query() expects at least 2 arguments, 1 given in /volume1/web/BetheDon/signup.php:12
Stack trace:
#0 /volume1/web/BetheDon/signup.php(12): mysqli_query('SELECT rules,to...')
#1 {main}
  thrown in /volume1/web/BetheDon/signup.php on line 12