Warning: Undefined variable $conn in C:\xampp\htdocs\nurimcocom\doc\admin\tab\subbanner.php on line 17

Warning: Undefined variable $depth in C:\xampp\htdocs\nurimcocom\doc\admin\tab\subbanner.php on line 17

Warning: Trying to access array offset on value of type null in C:\xampp\htdocs\nurimcocom\doc\admin\tab\subbanner.php on line 17

Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in C:\xampp\htdocs\nurimcocom\doc\admin\tab\subbanner.php:17 Stack trace: #0 C:\xampp\htdocs\nurimcocom\doc\admin\tab\subbanner.php(17): mysqli_query(NULL, 'SELECT id FROM ...') #1 {main} thrown in C:\xampp\htdocs\nurimcocom\doc\admin\tab\subbanner.php on line 17